THE NICE GUIDELINE ON ME/CFS

The NICE Guideline on ME/CFS: Diagnosis and Management [NG 206] Published 29 October 2021

• Myalgic encephalomyelitis (or encephalopathy)/chronic fatigue syndrome (ME/CFS) is a long-term condition that affects about 250,000 people in the UK. It can cause many different symptoms, which can be triggered or worsened by any kind of effort or activity.
• Symptoms include flu-like malaise, sleep difficulties, brain fog and a profound fatigue that is unlike normal tiredness. People may also experience chronic pain, headaches, nausea, digestive problems, and sensitivity to light, sound and other stimuli. Symptoms come and go and can change or worsen with little warning, causing distress and disrupting peoples lives.
• ME/CFS is different for everyone. It can range from a mild illness to a severely disabling one that leaves some people housebound or bedbound. Because it can look like many other illnesses, people often face uncertainty and delays in diagnosis. There are options that can help people manage their ME/CFS, but a therapy that helps one person may cause harm to another, so a carefully tailored plan and specialist advice is always needed.

We have updated the 2007 version of this guideline using the best available research and working with people who are affected by ME/CFS and professionals who treat and support them. We want it to make a difference to all adults, children and young people with ME/CFS and their families and carers by:

• helping doctors recognise when someones symptoms could be ME/CFS.
• making it faster to get support once ME/CFS is suspected so people dont have to wait for help while other conditions are ruled out.
• making sure people with ME/CFS have a confirmed diagnosis at 3 months.
• helping everyone with ME/CFS get specialist support and care designed around their own particular needs.
• making services more flexible to help people with ME/CFS get the care they need for example by making home visits, offering shorter or longer appointments and planning any hospital stays around their needs.

If you can’t understand the information you are given, tell your healthcare professional.

More information

• Download the Full NICE Guideline on ME/CFS as a PDF.
• Visit the NHS website about ME/CFS.
• To share an experience of the care you have received, contact your local Healthwatch or email the ME Association: feedback@meassociation.org.uk.
• You can access support and information by getting in touch with the ME Association's ME Connect service.

The NICE Guideline on ME/CFS: Making decisions together

Decisions about care are best when they are made together. Your health and social care professionals should give you clear information, discuss all the possible options with you and listen carefully to your views and concerns. They should also:

• treat you with empathy and understanding and take time to build a supportive relationship with you and your family or carer
• help you make a plan to manage your ME/CFS that you have control of and can change as you need to
• ensure you understand the benefits and risks of different options so you can decide for yourself what is right for you
• provide support and information for your family or carer.
• If you can’t understand the information you are given, tell your healthcare professional.

• Read more about making decisions about your care.
• Download the Full NICE Guideline on ME/CFS as a PDF or view it online.
• Visit the NHS website about ME/CFS.
• To share an experience of the care you have received, contact your local Healthwatch or email the ME Association: feedback@meassociation.org.uk.
• You will find additional support and information by getting in touch with the ME Association's ME Connect service.

The NICE Guideline on ME/CFS: Diagnosis and Management [NG 206] Published 29 October 2021

• This guideline covers diagnosing and managing myalgic encephalomyelitis (or encephalopathy)/chronic fatigue syndrome (ME/CFS) in children, young people and adults.
• It aims to improve awareness and understanding about ME/CFS and when to suspect it, so that people are diagnosed earlier. It includes recommendations on diagnosis, assessment and care planning, safeguarding, access to care and managing ME/CFS and its symptoms.
• These recommendations were developed based on evidence reviewed before the COVID-19 pandemic. We have not reviewed evidence on the effects of COVID-19, so it should not be assumed that these recommendations apply to people diagnosed with post-COVID-19 syndrome. NICE has produced a guideline on managing the long-term effects of COVID-19.

Recommendations

This guideline includes recommendations on:

• suspecting ME/CFS and diagnosis
• information and support, including advice when ME/CFS is suspected
• assessment and care and support planning
• safeguarding
• access to care and support
• managing ME/CFS
• symptom management
• flare-ups and relapse
• care for people with severe or very severe ME/CFS.

Who is it for?

• Health and social care professionals, including those working or providing input into educational and occupational health services
• Commissioners
• People with suspected or diagnosed ME/CFS, their families and carers and the public.

Guideline development process

How we develop NICE guidelines

• This guideline was commissioned by NICE and developed at the National Guideline Centre which is hosted by the Royal College of Physicians.
• This guideline updates and replaces NICE guideline CG53 (published August 2007).

The NICE Guideline on ME/CFS: Diagnosis and Management

The recommendations in this guideline represent the view of NICE, arrived at after careful consideration of the evidence available. When exercising their judgement, professionals and practitioners are expected to take this guideline fully into account, alongside the individual needs, preferences and values of their patients or the people using their service. It is not mandatory to apply the recommendations, and the guideline does not override the responsibility to make decisions appropriate to the circumstances of the individual, in consultation with them and their families and carers or guardian.

All problems (adverse events) related to a medicine or medical device used for treatment or in a procedure should be reported to the Medicines and Healthcare products Regulatory Agency using the Yellow Card Scheme.

Local commissioners and providers of healthcare have a responsibility to enable the guideline to be applied when individual professionals and people using services wish to use it. They should do so in the context of local and national priorities for funding and developing services, and in light of their duties to have due regard to the need to eliminate unlawful discrimination, to advance equality of opportunity and to reduce health inequalities. Nothing in this guideline should be interpreted in a way that would be inconsistent with complying with those duties.

Commissioners and providers have a responsibility to promote an environmentally sustainable health and care system and should assess and reduce the environmental impact of implementing NICE recommendations wherever possible.

1.1 Principles of care for people with ME/CFS

Also see the section on care for people with severe or very severe ME/CFS.

Awareness of ME/CFS and its impact

1.1.1 Be aware that ME/CFS:

• is a complex, chronic medical condition affecting multiple body systems and its pathophysiology is still being investigated.
• affects everyone differently and its impact varies widely for some people symptoms still allow them to carry out some activities, whereas for others they cause substantial incapacity.
• is a fluctuating condition in which a person's symptoms can change unpredictably in nature and severity over a day, week or longer.
• can affect different aspects of the lives of both people with ME/CFS and their families and carers, including activities of daily living, family life, social life, emotional wellbeing, work and education.

1.1.2 Recognise that people with ME/CFS:

• may have experienced prejudice and disbelief and could feel stigmatised by people (including family, friends, health and social care professionals, and teachers) who do not understand their illness. Consider:
  • the impact this may have on a child, young person or adult with ME/CFS,
  • that people with ME/CFS may have lost trust in health and social care services and be hesitant about involving them.

Approach to delivering care

1.1.3 Health and social care professionals should:

• take time to build supportive, trusting and empathetic relationships
• acknowledge to the person the reality of living with ME/CFS and how symptoms could affect them
• use a person-centred approach to care and assessment
• involve families and carers (as appropriate) in discussions and care planning if the person with ME/CFS chooses to include them
• be sensitive to the person's socioeconomic, cultural and ethnic background, beliefs and values, and their gender identity and sexual orientation, and think about how these might influence their experience, understanding and choice of management.

1.1.4 Recognise that people with ME/CFS need:

• timely and accurate diagnosis so they get appropriate care for their symptoms
• regular monitoring and review, particularly when their symptoms are worsening, changing or are severe (see the section on managing flare-ups in symptoms and relapse and review in primary care).

1.1.5 Explain to people with ME/CFS and their family or carers (as appropriate) that they can decline or withdraw from any part of their care and support plan and this will not affect access to any other aspects of their care. They can begin or return to this part of their plan if they wish to.

1.1.6 When working with children and young people with ME/CFS, ensure their voice is heard by:

• taking a child-centred approach, with the communication focusing on them
• discussing and regularly reviewing with them how they want to be involved in decisions about their care
• taking into account that they may find it difficult to communicate and describe their symptoms and may need their parents or carers (as appropriate) to help them
• recognising that they may need to be seen on more than 1 occasion to gain trust (with or without their parents or carers, as appropriate).

1.2 Suspecting ME/CFS

1.2.1 Explain to people presenting with possible symptoms of ME/CFS that there currently is no diagnostic test for ME/CFS and it is recognised on clinical grounds alone.

1.2.2 Suspect ME/CFS if:

• the person has had all of the persistent symptoms in box 2 for a minimum of 6 weeks in adults and 4 weeks in children and young people and
• the person's ability to engage in occupational, educational, social or personal activities is significantly reduced from pre‑illness levels and
• symptoms are not explained by another condition.

Box 2 Symptoms for suspecting ME/CFS

All of these symptoms should be present:

• Debilitating fatigue that is:
  • worsened by activity,
  • is not caused by excessive cognitive, physical, emotional or social exertion, and,
  • is not significantly relieved by rest.
• Post-exertional malaise after activity in which the worsening of symptoms:
  • is often delayed in onset by hours or days,
  • is disproportionate to the activity,
  • has a prolonged recovery time that may last hours, days, weeks or longer.
• Unrefreshing sleep or sleep disturbance (or both), which may include:
  • feeling exhausted, feeling flu-like and stiff on waking,
  • broken or shallow sleep, altered sleep pattern or hypersomnia.
• Cognitive difficulties (sometimes described as 'brain fog') , which may include:
  • problems finding words or numbers,
  • difficulty in speaking,
  • slowed responsiveness,
  • short-term memory problems, and difficulty concentrating or multitasking.

1.2.3 If ME/CFS is suspected, carry out:

• a medical assessment (including symptoms and history, comorbidities, overall physical and mental health)
• a physical examination
• an assessment of the impact of symptoms on psychological and social wellbeing
• investigations to exclude other diagnoses, for example (but not limited to):
  • urinalysis for protein, blood and glucose
  • full blood count
  • urea and electrolytes
  • liver function
  • thyroid function
  • erythrocyte sedimentation rate or plasma viscosity
  • C-reactive protein
  • calcium and phosphate
  • HbA1c
  • serum ferritin
  • coeliac screening
  • creatine kinase.
    
    Use clinical judgement to decide on additional investigations to exclude other diagnoses (for example, vitamin D, vitamin B12 and folate levels; serological tests if there is a history of infection; and 9am cortisol for adrenal insufficiency).

1.2.4 Be aware that the following symptoms may also be associated with, but are not exclusive to, ME/CFS:

• orthostatic intolerance and autonomic dysfunction, including dizziness, palpitations, fainting, nausea on standing or sitting upright from a reclining position.
• temperature hypersensitivity resulting in profuse sweating, chills, hot flushes, or feeling very cold.
• neuromuscular symptoms, including twitching and myoclonic jerks.
• flu-like symptoms, including sore throat, tender glands, nausea, chills or muscle aches.
• intolerance to alcohol, or to certain foods and chemicals.
• heightened sensory sensitivities, including to light, sound, touch, taste and smell.
• pain, including pain on touch, myalgia, headaches, eye pain, abdominal pain or joint pain without acute redness, swelling or effusion.

1.2.5 Primary healthcare professionals should consider seeking advice from an appropriate specialist if there is uncertainty about interpreting signs and symptoms and whether an early referral is needed. For children and young people, consider seeking advice from a paediatrician.

1.2.6 When ME/CFS is suspected:

• continue with any assessments needed to exclude or identify other conditions
• give the person advice on managing their symptoms in line with the section on advice for people with suspected ME/CFS.

1.2.7 When ME/CFS is suspected in a child or young person based on the criteria in recommendation 1.2.2 and the assessment in recommendation 1.2.3:

• refer them to a paediatrician for further assessment and investigation for ME/CFS and other conditions
• start to work with the child or young person's place of education or training to support flexible adjustments or adaptations.

1.3 Advice for people with suspected ME/CFS

1.3.1 When ME/CFS is suspected, give people personalised advice about managing their symptoms. Also advise them:

• not to use more energy than they perceive they have − they should manage their daily activity and not 'push through' their symptoms
• to rest and convalesce as needed (this might mean making changes to their daily routine, including work, school and other activities)
• to maintain a healthy balanced diet, with adequate fluid intake.

1.3.2 Explain to people with suspected ME/CFS that their diagnosis can only be confirmed after 3 months of persistent symptoms. Reassure them that they can return for a review before that if they develop new or worsened symptoms, and ensure that they know who to contact for advice.

1.4 Diagnosis

1.4.1 Diagnose ME/CFS in a child, young person or adult who has the symptoms in recommendation 1.2.2 that have persisted for 3 months and are not explained by another condition.

1.4.2 Primary healthcare professionals should consider seeking advice from an appropriate specialist if there is uncertainty about interpreting signs and symptoms at 3 months and whether further investigations are needed.

1.4.3 Refer adults directly to an ME/CFS specialist team (see box 3) to confirm their diagnosis and develop a care and support plan.

1.4.4 Refer children and young people who have been diagnosed with ME/CFS after assessment by a paediatrician (based on the criteria in recommendation 1.2.2) directly to a paediatric ME/CFS specialist team (see box 3) to confirm their diagnosis and develop a care and support plan.

Box 3 ME/CFS specialist team

• Specialist teams consist of a range of healthcare professionals with training and experience in assessing, diagnosing, treating and managing ME/CFS.
• They commonly have medically trained clinicians from a variety of specialisms (including rheumatology, rehabilitation medicine, endocrinology, infectious diseases, neurology, immunology, general practice and paediatrics) as well as access to other healthcare professionals specialising in ME/CFS.
• These may include physiotherapists, exercise physiologists, occupational therapists, dietitians, and clinical or counselling psychologists.
• Children and young people are likely to be cared for under local or regional paediatric teams that have experience of working with children and young people with ME/CFS in collaboration with ME/CFS specialist centres.

1.5 Assessment and care and support planning by an ME/CFS specialist team

Also see the section on care for people with severe or very severe ME/CFS.

1.5.1 Carry out and record a holistic assessment to confirm the person's diagnosis of ME/CFS and inform their care and support plan. This should include:

• a medical assessment (including relevant symptoms and history, comorbidities, overall physical and mental health, anything that is known to exacerbate or alleviate symptoms, and sleep quality)
• physical functioning
• the impact of symptoms on psychological, emotional and social wellbeing
• current and past experiences of medicines (including tolerance and sensitivities), vitamins and mineral supplements
• dietary assessment (including weight history before and after their diagnosis of ME/CFS, use of restrictive and alternative diets, and access to shopping and cooking).

1.5.2 Develop and agree a personalised care and support plan with the person with ME/CFS and their family or carers (as appropriate) informed by their holistic assessment. Include the following, depending on the person's needs:

• information and support needs (see the section on information and support)
• support for activities of daily living (see the section on access to care and support and recommendation 1.6.8 on accessing social care)
• mobility and daily living aids and adaptations to increase or maintain independence (see the recommendations on aids and adaptations)
• education, training or employment support needs (see the section on supporting people with ME/CFS in work, education and training)
• self-management strategies, including energy management (see the recommendations on energy management)
• physical functioning and mobility (see the recommendations on physical functioning and mobility)
• managing ME/CFS and symptom management, including medicines management (see recommendations 1.12.1 to 1.12.26 on managing symptoms)
• guidance on managing flare-ups and relapses (see the section on managing flare-ups in symptoms and relapses)
• details of the health and social care professionals involved in the person's care, and who to contact (see recommendation 1.10.3).

1.5.3 Recognise that the person with ME/CFS is in charge of the aims of their care and support plan.

1.5.4 Give the person and their family or carers (as appropriate) a copy of their care and support plan and share a copy with their GP.

1.6.1 Ensure information is provided to people with ME/CFS and their family or carers (as appropriate):

• in a variety of formats, such as written materials, electronic and audio, and suitable for their needs (for example, in their preferred language or an accessible version).
• both in person in clinical settings and for them to use at home.

Follow the principles on communication, information giving and shared decision making in the NICE guidelines on patient experience in adult NHS services , people's experience in adult social care services and shared decision making.

1.6.2 When providing information for children and young people with ME/CFS, take into account their age and level of understanding, symptoms and any disabilities or communication needs. Use interactive formats such as:

• one-to-one or group discussion
• written materials and pictures
• play, art and music activities
• digital media, for example video or interactive apps.

1.6.3 Give people with ME/CFS and their family or carers (as appropriate) up-to-date information about ME/CFS as soon as it is suspected.

• Tailor information to people's circumstances, including their symptoms, the severity of their condition and how long they have had ME/CFS.
• Ask people regularly if they would like more information or to revisit discussions.

1.6.4 Explain that ME/CFS:

• is a fluctuating medical condition that affects everyone differently, in which symptoms and their severity can change over a day, week or longer.
• varies in long-term outlook from person to person although a proportion of people recover or have a long period of remission, many will need to adapt to living with ME/CFS.
• varies widely in its impact on people's lives, and can affect their daily activities, family and social life, and work or education (these impacts may be severe).
• can be worsened by particular triggers these can be known or new triggers or in some cases there is no clear trigger.
• can be self-managed with support and advice (see the section on energy management).
• can involve flare-ups and relapses even if symptoms are well managed, so planning for these should be part of the energy management plan.

1.6.6 Give people with ME/CFS and their family or carers (as appropriate) information about:

• self-help groups, support groups and other local and national resources for people with ME/CFS
• where to access advice about financial support, including applying for benefits.

1.6.7 Discuss sensitively with the person and their family or carers (as appropriate):

• how social care may benefit them.

• Explain that it can help the person living with ME/CFS as well as provide a route to support for families and carers through a formal carer's assessment.
• Also see recommendations 1.8.5 and 1.8.6 on maintaining independence.

1.6.8 Explain to people with ME/CFS and their family or carers (as appropriate):

• How to self-refer for a social care needs assessment from their local authority.

• Offer to make the referral for them if they prefer.

1.6.9 Advise children and young people with moderate ME/CFS or severe or very severe ME/CFS and their parents or carers (as appropriate):

• That they may be entitled to support from children's social care as children in need because of their disability.

1.6.10 Follow recommendations in the NICE guideline on supporting adult carers on identifying, assessing and meeting the caring, physical and mental health needs of families and carers.

1.6.11 Advise families and carers about the right to assessment and support for their own needs, as follows:

• parents and carers of children and young people under 16 with ME/CFS, according to the Children and Families Act 2014
• young carers, according to the Young Carers (Needs Assessment) Regulations 2015.

1.7 Safeguarding

1.7.1 Recognise that people with ME/CFS, particularly those with severe or very severe ME/CFS, are at risk of their symptoms being confused with signs of abuse or neglect.

1.7.2 If a person with confirmed or suspected ME/CFS needs a safeguarding assessment, directly involve health and social care professionals who have training and experience in ME/CFS as soon as possible.

1.7.3 If a person with confirmed or suspected ME/CFS needs to be assessed under the Mental Health Act 1983 or the Mental Capacity Act 2005, directly involve health and social care professionals who have training and experience in ME/CFS as soon as possible.

1.7.4 Recognise that the following are not necessarily signs of abuse or neglect in children and young people with confirmed or suspected ME/CFS:

• physical symptoms that do not fit a commonly recognised illness pattern
• more than 1 child or family member having ME/CFS
• disagreeing with, declining or withdrawing from any part of their care and support plan, either by them or by their parents or carers on their behalf
• parents or carers acting as advocates and communicating on their behalf
• reduced or non-attendance at school.

1.7.5 Be aware that recognising and responding to possible child abuse and neglect (maltreatment) is complex and should be considered in the same way for children and young people with confirmed or suspected ME/CFS as with any child with a chronic illness or disability. Follow the NICE guidelines on child maltreatment and child abuse and neglect.

1.7.6 Offer children and young people with ME/CFS a review of their care and support plan at least every 6 months, and more frequently if needed, depending on the severity and complexity of their symptoms.

1.8 Access to care and support

Also see the section on care for people with severe or very severe ME/CFS.

1.8.1 Health and social care organisations should ensure that people with ME/CFS can use their services by:

• adapting the timing, length and frequency of all appointments to the person's needs
• taking into account physical accessibility, such as how far the person has to travel, whether there is suitable transport and parking, and where rooms are for appointments
• taking into account sensitivities to light, sound, touch, pain, temperature extremes or smells
• providing care flexibly to the person's needs, such as by online or phone consultations or making home visits.

1.8.2 If a person with ME/CFS misses an appointment:

• do not discharge them for not attending because it could be due to their symptoms worsening
• discuss why they could not attend and how the multidisciplinary team can support them.

1.8.3Be aware that people with ME/CFS are unlikely to be seen at their worst because:

• debilitating symptoms or the risk that their symptoms will worsen may prevent people from leaving their home
• cognitive difficulties may often mean people wait until they feel they can speak and explain clearly before contacting services.

For improving access to hospital inpatient and outpatient care for people with ME/CFS, see recommendation 1.8.1.

1.8.4 Discuss with people who need inpatient care whether any aspects of where their care will be provided could cause problems for them, including:

• where a bed is situated on a ward (if possible, aim to provide a single room)
• the accessibility of toilets and washrooms
• environmental factors such as lighting, sound, heating and smells.

Also see the recommendations on social care and supporting families and carers of people with ME/CFS.

1.8.5 If a person with ME/CFS needs support at home, carry out a social care needs assessment. As a minimum, record and provide information and support on:

• activities of daily living
• mobility, including transferring from bed to chair, access to and use of toilet and washing facilities, use of stairs, and access to outside space
• dexterity and balance, including avoiding falls
• their home, including environmental controls to reduce light levels, sound levels and temperature fluctuations
• the feasibility of equipment and adaptations
• access to technology, including internet access
• where to get financial support and advice, for example signposting to advice on money management and making personalised arrangements with banks or the Post Office to access personal finances, and how to claim carers' and disability benefits and grants.

1.8.6 Give families and carers information on how to access training and resources about caring for the person with ME/CFS (see the NICE guideline on supporting adult carers).

1.8.7 Enable prompt assessment for funding for home adaptation.

• If the person is not eligible for funding, continue to offer information and support in arranging home adaptations.

1.8.8 For people with moderate ME/CFS or severe or very severe ME/CFS, consider:

• Providing or recommending aids and adaptations (such as a wheelchair, blue badge or stairlift) that could help them maintain their independence and improve their quality of life, taking into account the risks and benefits.
• Include these in the person's care and support plan.

1.8.9 Provide aids and adaptations identified in the person's social care needs assessment without delay, so that people with ME/CFS can carry out activities of daily living and maintain their quality of life as much as possible.

1.9 Supporting people with ME/CFS in work, education and training

1.9.1 Offer to liaise on the person's behalf (with their informed consent) with:

• employers, education providers and support services.

• Give them information about ME/CFS and discuss the person's care and support plan and any adjustments needed.

1.9.2 Advise and discuss with people with ME/CFS that:

• they may be able to access reasonable adjustments or adaptations (in line with the Equality Act 2010) to help them continue or return to work or education
• there may be times when they are unable to continue with work or education
• some people find that going back to work, school or college worsens their symptoms.

1.9.3 Health and social care professionals should follow the Department for Education's guidance on supporting pupils at school with medical conditions or equivalent statutory guidance.

1.9.4 Health and social care professionals should work with training and education services to:

• provide information about ME/CFS and the needs and impairments of children and young people with ME/CFS, including the need for a balance of activities in their life
• discuss the child or young person's care and support plan so that everyone has a common understanding of their priorities, hopes and plans
• discuss a flexible approach to training and education – this could include adjustments to the school day, online learning or education at home and using assistive equipment.

1.9.5 Give parents and carers information about education, health and care (EHC) plans and how to request one from their local authority.

1.9.6 Advise children and young people with ME/CFS and their parents or carers (as appropriate) that:

• training or education should not be the only activity they undertake
• they should aim to find a balance between the time they spend on education or training, home and family life, and social activities.

1.10 Multidisciplinary care

1.10.1 Provide care for people with ME/CFS using a coordinated multidisciplinary approach. Based on the person's needs, include access to health and social care professionals with expertise in the following as a minimum, with additional expertise depending on symptoms:

• medical assessment and diagnosis
• developing personalised care and support plans
• self-management strategies, including energy management
• symptom management, including prescribing and medicines management
• managing flare-ups and relapses
• activities of daily living, including dental health
• psychological, emotional and social wellbeing, including family and sexual relationships
• diet and nutrition
• mobility, avoiding falls and problems from loss of dexterity, including access to aids and rehabilitation services
• social care and support
• support to engage in work, education, social activities and hobbies.

1.10.2 Care for people whose ME/CFS is managed in primary care should be supported by advice and direct clinical consultation from an ME/CFS specialist team.

1.10.3 Give adults, children and young people with ME/CFS and their family or carers (as appropriate):

• A named contact in their primary care and/or ME/CFS specialist team to coordinate their care and support plan, help them access services and support them during periods of relapse.

1.10.4 Provide children and young people with ME/CFS and their family or carers (as appropriate):

• with details of a named professional in the ME/CFS specialist team who they can contact with any concerns about the child or young person's health, education or social life.

Moving into adults' services

1.10.5 For young adults with ME/CFS moving from children's to adults' services:

• manage transitions in line with the NICE guideline on transition from children's to adults' services for young people using health or social care services.

1.11 Managing ME/CFS

1.11.1 Be aware that ME/CFS symptoms can be managed but there is currently no cure (non-pharmacological or pharmacological) for ME/CFS.

Also see the section on care for people with severe or very severe ME/CFS.

1.11.2 Discuss with people with ME/CFS the principles of energy management, the potential benefits and risks and what they should expect. Explain that it:

• is not curative
• is a self-management strategy led by the person themselves with support from a healthcare professional in an ME/CFS specialist team
• includes all types of activity (cognitive, physical, emotional and social) and takes into account overall level of activity
• helps people learn to use the amount of energy they have while reducing their risk of post-exertional malaise or worsening their symptoms by exceeding their limits
• recognises that each person has a different and fluctuating energy limit and they are experts in judging their own limits
• can include help from a healthcare professional to recognise when they are approaching their limit (children and young people in particular may find it harder to judge their limits and can overreach them)
• uses a flexible, tailored approach so that activity is never automatically increased but is maintained or adjusted (upwards after a period of stability or downwards when symptoms are worse)
• is a long-term approach − it can take weeks, months or sometimes even years to reach stabilisation or to increase tolerance or activity.

1.11.3 Help people with ME/CFS develop a plan for energy management as part of their care and support plan. Support them to establish realistic expectations and develop goals that are meaningful to them. Discuss and record the following in the plan along with anything else that is important to the person:

• cognitive activity
• mobility and other physical activity
• ability to undertake activities of daily living
• psychological, emotional and social demands, including family and sexual relationships
• rest and relaxation (both quality and duration)
• sleep quality and duration
• effect of environmental factors, including sensory stimulation.

1.11.4 Work with the person to establish an individual activity pattern within their current energy limits that minimises their symptoms. For example:

• agree a sustainable level of activity as the first step, which may mean reducing activity
• plan periods of rest and activity, and incorporate the need for pre-emptive rest
• alternate and vary between different types of activity and break activities into small chunks.

1.11.5 Agree how often to review the person's energy management plan with them and revise it if needed.

1.11.6 Advise people with ME/CFS how to manage flare-ups and relapses (see the section on managing flare-ups in symptoms and relapse).

1.11.7 Make self-monitoring of activity as easy as possible by taking advantage of any tools the person already uses, such as an activity tracker, phone heart-rate monitor or diary.

1.11.8 Refer people with ME/CFS to a physiotherapist or occupational therapist working in an ME/CFS specialist team if they:

• have difficulties caused by reduced physical activity or mobility (also see the sections on physical functioning and mobility and care for people with severe or very severe ME/CFS) or
• feel ready to progress their physical activity beyond their current activities of daily living (see the section on physical activity and exercise) or
• would like to incorporate a physical activity or exercise programme into managing their ME/CFS (see the section on incorporating physical activity and exercise).

1.11.9 Do not advise people with ME/CFS to undertake exercise that is not part of a programme overseen by an ME/CFS specialist team, such as telling them to go to the gym or exercise more, because this may worsen their symptoms.

1.11.10 Only consider a personalised physical activity or exercise programme for people with ME/CFS who:

• feel ready to progress their physical activity beyond their current activities of daily living or
• would like to incorporate physical activity or exercise into managing their ME/CFS.

1.11.11 Tell people about the risks and benefits of physical activity and exercise programmes. Explain that some people with ME/CFS have found that they can make their symptoms worse, for some people it makes no difference and others find them helpful.

1.11.12 If a physical activity or exercise programme is offered, it should be overseen by a physiotherapist in an ME/CFS specialist team.

1.11.13 If a person with ME/CFS takes up the offer of a personalised physical activity or exercise programme, agree a programme with them that involves the following and review it regularly:

• establishing their physical activity baseline at a level that does not worsen their symptoms
• initially reducing physical activity to be below their baseline level
• maintaining this successfully for a period of time before attempting to increase it
• making flexible adjustments to their physical activity (up or down as needed) to help them gradually improve their physical abilities while staying within their energy limits
• recognising a flare-up or relapse early and outlining how to manage it.

1.11.14 Do not offer people with ME/CFS:

• any therapy based on physical activity or exercise as a cure for ME/CFS
• generalised physical activity or exercise programmes – this includes programmes developed for healthy people or people with other illnesses
• any programme that does not follow the approach in recommendation 1.11.13 or that uses fixed incremental increases in physical activity or exercise, for example, graded exercise therapy (see box 4)
• physical activity or exercise programmes that are based on deconditioning and exercise avoidance theories as perpetuating ME/CFS.

Box 4 Graded exercise therapy definition

• Graded exercise therapy is a term used in varying ways by different services supporting people with ME/CFS.
• In this guideline, graded exercise therapy is defined as first establishing an individual's baseline of achievable exercise or physical activity, then making fixed incremental increases in the time spent being physically active. This definition of graded exercise therapy reflects the descriptions given in the evidence that was reviewed, and it is this approach that the guideline says should not be undertaken.
• An individualised approach that should be taken for people with ME/CFS who choose to undertake a physical activity or exercise programme is described in recommendations 1.11.10 to 1.11.13.

Graded Exercise Therapy (GET) is a term used in varying ways by different services supporting people with ME/CFS. In this guideline, graded exercise therapy is defined as first establishing an individual's baseline of achievable exercise or physical activity, then making fixed incremental increases in the time spent being physically active. This definition of graded exercise therapy reflects the descriptions given in the evidence that was reviewed, and it is this approach that the guideline says should not be undertaken. An individualised approach that should be taken for people with ME/CFS who choose to undertake a physical activity or exercise programme is described in recommendations 1.11.10 to 1.11.13.

1.11.15 Agree with the person how to adjust their physical activity during a flare-up or relapse. This should include:

• providing access to review and support from a physiotherapist in an ME/CFS specialist team
• stabilising their symptoms by reducing physical activity to within their current energy limits
• only once symptoms stabilise and the person feels able to resume physical activity, establishing a new physical activity baseline.

1.11.16 Advise people with ME/CFS after a flare-up that the time it takes to return to the level of physical activity they had before varies from person to person.

1.12 Symptom management for people with ME/CFS

Refer to relevant NICE guidance for managing symptoms that are not covered in this section, taking into account the recommendations in the sections on principles of care for people with ME/CFS, access to care and support and energy management.

1.12.1 Advise people with ME/CFS:

• about the role of rest in ME/CFS.
• that rest periods are part of all management strategies for ME/CFS.
• how to introduce rest periods into their daily routine, including how often and for how long, as appropriate for each person.
• that relaxation techniques at the beginning of each rest period could be helpful.

1.12.2 Give people with ME/CFS personalised sleep management advice that includes:

• explaining the role and effect of sleep disturbance in ME/CFS.
• identifying the common changes in sleep patterns seen in ME/CFS (such as broken or shallow sleep, altered sleep pattern or hypersomnia).
• developing good sleep habits.
• taking into account the need for rest in the day and balancing this against how the person is sleeping at night.
• introducing changes to sleep patterns gradually.

1.12.3 If sleep management strategies do not improve the person's sleep and rest, think about the possibility of an underlying sleep disorder or dysfunction and whether to refer to an appropriate specialist.

1.12.4 Review the use of rest periods and sleep management strategies regularly as part of the person's care and support plan.

1.12.5 Include strategies to maintain and prevent deterioration of physical functioning and mobility in the care and support plans of people with ME/CFS. These strategies may need to be carried out in small amounts and spread out throughout the day. Think about including the following:

• joint mobility
• muscle flexibility
• balance
• postural and positional support
• muscle function
• bone health
• cardiovascular health.

1.12.6 Assess at every contact people with severe or very severe ME/CFS or those with prolonged periods of immobility for:

• areas at risk of pressure ulcers (see the NICE guideline on pressure ulcers)
• deep vein thrombosis (see the NICE guideline on venous thromboembolic diseases)
• risk of contractures.

1.12.7 Give people with ME/CFS and their family or carers (as appropriate) information, advice and support on how to recognise and prevent possible complications of long-term immobility.

1.12.8 Give families and carers information, advice and support on how to help people with ME/CFS follow their care and support plan in relation to physical functioning and mobility. This may include:

• bed mobility
• moving from lying to sitting to standing
• transferring from bed to chair
• using mobility aids
• walking
• joint mobility
• muscle stretching
• muscle strength
• balance
• going up and down stairs.
  
  For training to provide care and support, see NICE's guideline on supporting adult carers.

1.12.9 Be aware that people with ME/CFS may experience orthostatic intolerance, including postural orthostatic tachycardia syndrome (POTS).

1.12.10 Medicine for orthostatic intolerance in people with ME/CFS should only be prescribed or overseen by a healthcare professional with expertise in orthostatic intolerance.

1.12.11 Refer people with orthostatic intolerance to secondary care if their symptoms are severe or worsening, or there are concerns that another condition may be the cause.

1.12.12 Be aware that pain is a symptom commonly associated with ME/CFS.

1.12.13 Investigate and manage the person's pain according to best practice, referring to specialist pain services if appropriate.

1.12.14 Refer to the following for advice on treating neuropathic pain or headaches:

• NICE's guideline on neuropathic pain in adults
• NICE's guideline on headaches in over 12s.

1.12.15 Do not offer any medicines or supplements to cure ME/CFS.

1.12.16 Offer people with ME/CFS a medication review in line with the NICE guidelines on medicines adherence and medicines optimisation.

1.12.17 Take into account when prescribing that people with ME/CFS may be more intolerant of drug treatment. Consider:

• starting medicines at a lower dose than in usual clinical practice
• gradually increasing the dose if the medicine is tolerated.

1.12.18 Drug treatment for the symptoms associated with ME/CFS for children and young people should only be started under guidance or supervision from a medical professional trained and experienced in paediatric prescribing.

Also see the section on care for people with severe or very severe ME/CFS.

1.12.19 Emphasise to people with ME/CFS the importance of adequate fluid intake and a well-balanced diet according to the NHS eat well guide.

1.12.20 Work with the person and their family or carers (as appropriate) to find ways of minimising complications caused by:

• gastrointestinal symptoms (such as nausea)
• changes to appetite
• swallowing difficulties
• sore throat
• or difficulties with buying, preparing and eating food.

1.12.21 Encourage people with ME/CFS who have nausea to:

• Keep up adequate fluid intake and advise them to try to eat regularly, taking small amounts often.
• Explain that not eating or drinking may increase their nausea.

1.12.22 Refer people with ME/CFS for a dietetic assessment by a dietitian with a special interest in ME/CFS if they are:

• losing weight and at risk of malnutrition
• gaining weight
• following a restrictive diet.

1.12.23 Be aware that people with ME/CFS may be at risk of vitamin D deficiency, especially those who are housebound or bedbound.

• For advice on vitamin D supplementation, see the NICE guideline on vitamin D.

1.12.24 Explain to people with ME/CFS that there is not enough evidence to support routinely taking vitamin and mineral supplements as a cure for ME/CFS or for managing symptoms.

• If they choose to take a vitamin or supplement, explain the potential side effects of taking doses of vitamins and minerals above the recommended daily amount.

1.12.25 Refer children and young people with ME/CFS who are losing weight or have faltering growth or dietary restrictions to a paediatric dietitian with a special interest in ME/CFS.

1.12.26 For advice on food allergies in children, see the NICE guideline on food allergy in under 19s.

1.12.27 Do not offer the Lightning Process, or therapies based on it, to people with ME/CFS.

Also see the section on care for people with severe or very severe ME/CFS.

1.12.28 Discuss cognitive behavioural therapy (CBT) with adults, children and young people with ME/CFS (and their parents or carers, as appropriate). Explain:

• its principles, including that it may help them manage their symptoms but it is not curative (see box 5) and
• any potential benefits and risks.

Box 5 Cognitive behavioural therapy

The committee wanted to highlight that cognitive behavioural therapy (CBT) has sometimes been assumed to be a cure for ME/CFS. However, it should only be offered to support people who live with ME/CFS to manage their symptoms, improve their functioning and reduce the distress associated with having a chronic illness.

1.12.29 Only offer CBT to adults, children and young people with ME/CFS if, after discussing it (see recommendation 1.12.28), they would like to use it to support them in managing their symptoms.

1.12.30 For children and young people with ME/CFS who would like to use CBT:

• involve parents or carers (as appropriate) in the therapy wherever possible
• adapt the therapy to the child or young person's cognitive and emotional stage of development.
  
  Also see the section on principles of care for people with ME/CFS (including the additional principles of care for children and young people with ME/CFS).

1.12.31 CBT should only be delivered by a healthcare professional with appropriate training and experience in CBT for ME/CFS, and under the clinical supervision of someone with expertise in CBT for ME/CFS.

1.12.32 Explain that CBT for people with ME/CFS:

• aims to improve their quality of life, including functioning, and reduce the distress associated with having a chronic illness
• does not assume people have 'abnormal' illness beliefs and behaviours as an underlying cause of their ME/CFS, but recognises that thoughts, feelings, behaviours and physiology interact with each other.

1.12.33 Explain what CBT involves so people know what to expect. Tell them that it:

• takes a non-judgemental, supportive approach to the person's experience of their symptoms and the challenges these present
• is a collaborative, structured, time-limited intervention that focuses on the difficulties people are having at that time
• involves working closely with their therapist to establish strategies to work towards goals and priorities that they have chosen themselves
• takes into account how symptoms are individual to each person, can fluctuate in severity and may change over time.

1.12.34 CBT for people with ME/CFS should include the following components:

• developing a shared understanding with the person about the main difficulties and challenges they face
• exploring the personal meaning of their symptoms and illness, and how this might relate to how they manage their symptoms
• developing a self-management plan
• working together to adapt and refine self-management strategies to improve the person's functioning and quality of life, for example their sleep, activity and rest
• reviewing their plan regularly to see if their self-management strategies need to be adapted, for example if their symptoms or functioning change
• developing a therapy blueprint collaboratively with their therapist at the end of therapy.

1.13 Managing coexisting conditions

1.13.1 Be aware that other conditions may coexist with ME/CFS and should be investigated and managed according to best practice.

1.13.2 When managing coexisting conditions in people with ME/CFS, take into account the recommendations in the sections on principles of care for people with ME/CFS, access to care and support and energy management.

1.13.3 For recommendations on multimorbidity, thyroid disease and irritable bowel syndrome in adults, refer to the:

• NICE guideline on multimorbidity
• NICE guideline on thyroid disease
• NICE guideline on irritable bowel syndrome in adults.

1.13.4 For recommendations on identifying and treating associated or comorbid anxiety, depression or mood disorders, see the:

• NICE guideline on depression in adults
• NICE guideline on depression in adults with a chronic physical health problem
• NICE guideline on depression in children and young people
• NICE guideline on generalised anxiety disorder and panic disorder in adults
• NICE guideline on common mental health problems.

1.14 Managing flare-ups in symptoms and relapse

1.14.1 Explain that flare-ups and relapses can happen in ME/CFS even if the person's symptoms are well managed.

1.14.2 Tell people with ME/CFS that:

• they are likely to be having a flare‑up if they experience a worsening of their symptoms beyond their normal day-to-day variation, which lasts a few days
• a relapse is when there is a sustained and marked exacerbation of ME/CFS symptoms lasting longer than a flare‑up and needing substantial and sustained adjustment of energy management.

1.14.3 Include guidance on managing flare‑ups and relapses in the person's care and support plan.

1.14.4 Evaluate and investigate any new symptoms or a change in symptoms and do not assume they are caused by the person's ME/CFS.

1.14.5 Discuss and agree self-management strategies with the person with ME/CFS to help them respond promptly if they have a flare‑up or relapse, and record these in their care and support plan. This should include:

• For a flare‑up:
  • identifying possible triggers, such as acute illness or overexertion (in some cases, there may be no clear trigger)
  • temporarily reducing their activity levels
  • monitoring symptoms, recognising that although flare‑ups are transient, some will develop into a relapse
  • not returning to usual activity levels until the flare‑up has resolved.
• For a relapse:
  • reducing, or even stopping, some activities
  • increasing the frequency or duration of rest periods
  • reassessing energy limits to stabilise symptoms.

1.14.6 If a flare-up or relapse cannot be managed using the person's self-management strategies outlined in their care and support plan or they are worried about new symptoms or a change in symptoms, advise the person to contact their named contact in primary care or the ME/CFS specialist team.

1.14.7 When a person with ME/CFS has a relapse, review their care and support plan with them (if needed), and discuss and agree a course of action, taking into account:

• possible causes of the relapse, if known
• the nature of the symptoms
• the severity and duration of the relapse (bearing in mind this can be years).

After a flare-up or relapse

1.14.8 Once a flare‑up or relapse has resolved or stabilised, discuss with the person:

• whether their care and support plan needs to be reviewed and adjusted to reflect their current symptoms and energy limit if this is different from before the flare‑up or relapse (for people participating in physical activity or exercise programmes, see recommendations 1.11.15 and 1.11.16)
• their experience of the flare‑up or relapse to determine whether strategies can be put in place to manage potential triggers in the future.

1.15 Review in primary care

1.15.1 Offer adults with ME/CFS a review of their care and support plan in primary care at least once a year.

1.15.2 Offer children and young people with ME/CFS a review of their care and support plan at least every 6 months.

1.15.3 Arrange more frequent primary care reviews for children, young people and adults with ME/CFS as needed, depending on the severity and complexity of their symptoms, and the effectiveness of any symptom management.

1.15.4 When carrying out a review in primary care, ensure you have access to the person's care and support plan and any clinical communications from the ME/CFS specialist team (including their discharge letter, if relevant).

1.15.5 As part of the review, discuss with the person with ME/CFS (and their family or carers, as appropriate) and record as a minimum:

• their condition, including any changes in their illness and the impact of this
• symptoms, including whether they have experienced new symptoms
• self-management − ask about their energy management plan and (if relevant) their physical activity or exercise programme
• who is helping them and how they provide support
• psychological, emotional and social wellbeing
• any future plans − ask if the person is considering any changes or if they have any challenges ahead.

1.15.6 Refer the person with ME/CFS to their named contact in the ME/CFS specialist team if there are any new or deteriorating aspects of their condition.

1.15.7 Consider seeking advice from an appropriate specialist if there is uncertainty about interpreting signs and symptoms and whether a referral is needed.

1.15.8 Evaluate and investigate whether new symptoms, or a change in symptoms, are due to the person's ME/CFS or whether they are due to another condition.

Additional principles for children and young people

1.15.9 Ensure reviews are carried out or overseen by a paediatrician with expertise in ME/CFS. Involve other appropriate specialists as needed.

1.15.10 When deciding how often reviews or reassessment might be needed for children and young people with ME/CFS, take into account:

• their developmental stage
• transitions, such as changing schools or exams
• the severity and complexity of symptoms
• the effectiveness of any symptom management.
  
  Also see recommendation 1.1.6 on ensuring the child's voice is heard and on involving their parents or carers.

1.16 Training for health and social care professionals

1.16.1 Health and social care providers should ensure that all staff delivering care to people with ME/CFS receive training relevant to their role so they can provide care in line with this guideline. Training should include:

• helping them to understand what ME/CFS is and its diagnosis and management
• the experiences of people with ME/CFS.

1.17 Care for people with severe or very severe ME/CFS

This section supplements the rest of the guideline with additional considerations for people with severe or very severe ME/CFS.

Awareness of severe and very severe ME/CFS and its impact

Also see the main section on principles of care for people with ME/CFS.

1.17.1 Be aware that people with severe or very severe ME/CFS may experience the following symptoms that significantly affect their lives, including their mobility, emotional wellbeing and ability to interact with others and care for themselves:

• severe and constant pain, which can have muscular, arthralgic or neuropathic features
• hypersensitivity to light, sound, touch, movement, temperature extremes and smells
• extreme weakness, with severely reduced movement
• reduced ability or inability to speak or swallow
• cognitive difficulties that limit the person's ability to communicate and take in written or verbal communication
• sleep disturbance such as unrefreshing sleep, hypersomnia and altered sleep pattern
• gastrointestinal difficulties such as nausea, incontinence, constipation and bloating
• neurological symptoms such as double vision and other visual disorders, dizziness
• orthostatic intolerance and autonomic dysfunction, such as postural orthostatic tachycardia syndrome (POTS) and postural hypotension.

1.17.2 Recognise that symptoms of severe or very severe ME/CFS may mean that people:

• need a low-stimulus environment, for example a dark quiet room with interaction at a level of their choice (this may be little or no social interaction)
• are housebound or bedbound and may need support with all activities of daily living, including aids and adaptations to assist mobility and independence in activities of daily living (for example, a wheelchair)
• need careful physical contact when supported with activities of daily living, taking into account possible sensitivity to touch
• cannot communicate without support and may need to choose someone to be their advocate and communicate for them
• are unable to eat and digest food easily and may need support with hydration and nutrition (see the recommendations on dietary management and strategies)
• have problems accessing information, for example because of difficulty with screens, sound and light sensitivity, headaches affecting their ability to read, or brain fog affecting their concentration.

1.17.3 Personal care and support for people with severe or very severe ME/CFS should be carried out by health and social care practitioners who are:

• known to the person and their family or carers wherever possible
• aware of the person's needs.

1.17.4 Risk assess each interaction with a person with severe or very severe ME/CFS in advance to ensure its benefits will outweigh the risks (for example, worsening their symptoms) to the person.

• For people with very severe ME/CFS, think about discussing this with the person's family or carers on their behalf (if appropriate), while keeping the focus of the engagement on the person with ME/CFS.

Assessment and care and support planning by an ME/CFS specialist team

Also see the main section on assessment and care and support planning by an ME/CFS specialist team.

1.17.5 Offer home visits to people with severe or very severe ME/CFS to carry out their holistic assessment and develop their care and support plan.

Access to care and support

Also see the main section on access to care and support.

1.17.6 Service providers should be proactive and flexible in delivering services to people with severe or very severe ME/CFS, who may have particular difficulty accessing services and articulating their needs.

• This could include home visits, online or phone consultations, supplying written communication, and supporting their applications for aids and appliances.

Hospital care

1.17.7 When planning hospital care for people with severe or very severe ME/CFS:

• discuss with the person (and their family or carers, as appropriate) what to expect when they come into hospital
• aim to minimise discomfort and post-exertional malaise during transfer to hospital, for example by planning the route in advance, avoiding noisy areas and admitting them straight to the ward on arrival
• discuss the person's care and support plan with them, including information on comorbidities, intolerances and sensitivities, to plan any reasonable adjustments that are needed
• aim to provide a single room if possible
• keep stimuli to a minimum, for example by:
  • seeing them one-to-one
  • using calm movements and gestures
  • not duplicating assessments
  • being cautious about the pressure of touch
  • keeping lights dimmed
  • reducing sound
  • keeping a stable temperature
  • minimising smells.

Managing ME/CFS

Also see the main section on managing ME/CFS.

Energy management

Also see the main section on energy management.

1.17.8 Refer people with severe or very severe ME/CFS to a physiotherapist or occupational therapist working in an ME/CFS specialist team for support on developing energy management plans.

1.17.9 When agreeing energy management plans with people with severe or very severe ME/CFS (and their family or carers, as appropriate), take into account the need to make any changes in activity smaller and any increases (if possible) much slower.

Symptom management

Also see the main section on symptom management for people with ME/CFS.

Dietary management and strategies

1.17.10 Refer people with severe or very severe ME/CFS for a dietetic assessment by a dietitian with a special interest in ME/CFS.

1.17.11 Monitor people with severe or very severe ME/CFS who are at risk of malnutrition or unintentional weight loss because of:

• restrictive diets
• poor appetite, for example linked with altered taste, smell and texture
• food intolerances
• nausea
• difficulty swallowing and chewing.
  
  Follow the recommendations on screening for malnutrition and indications for nutrition support, in the NICE guideline on nutrition support for adults.

1.17.12 Give advice to support people with severe or very severe ME/CFS, which could include:

• eating little and often
• having nourishing drinks and snacks, including food fortification
• finding easier ways of eating to conserve energy, such as food with softer textures
• using modified eating aids, particularly if someone has difficulty chewing or swallowing
• oral nutrition support and enteral feeding.

Cognitive behavioural therapy

1.17.13 Healthcare professionals delivering CBT to people with severe or very severe ME/CFS should adjust the process and pace of CBT to meet the person's needs.

• This might include shorter, less frequent sessions and longer-term goals.

Any effort that uses energy, which includes cognitive, emotional and social activity as well as physical activity. Different activities combine and interact to cause a cumulative impact for the person.

In this guideline, the role of an advocate is to support a vulnerable or disadvantaged person with ME/CFS and ensure that their rights are being upheld in a health and social care context. They are chosen by the person with ME/CFS and could be a family member, carer, friend or an independent advocate. They make sure that the person is heard.

The personalised collaborative care and support plan is developed by the ME/CFS specialist team based on a holistic assessment. It is the basis for other assessments and plans in areas such as social care, energy management, physical activity, physical functioning and mobility, cognitive behavioural therapy and dietary management.

In this guideline, a carer refers to someone who provides unpaid care and support to a family member, partner or friend with ME/CFS. This is distinct from care workers who are employed to provide support.

In this guideline, children and young people are aged under 18 (adults are 18 and above). Energy limit The amount of energy a person has to do all activities without triggering an increase or worsening of their symptoms.

A self-management strategy that involves a person with ME/CFS managing their activities to stay within their energy limit, with support from a healthcare professional.

Exercise is planned, structured, repetitive and purposeful activity focused on improvement or maintenance of 1 or more components of physical fitness. Exercise is a subcategory of physical activity.

Fatigue in ME/CFS typically has the following components:

• - feeling flu-like, especially in the early days of the illness.
• - restlessness or feeling 'wired but tired'.
• - low energy or a lack of physical energy to start or finish activities of daily living and the sensation of being 'physically drained'.
• - cognitive fatigue that worsens existing difficulties.
• - rapid loss of muscle strength or stamina after starting an activity, causing for example, sudden weakness, clumsiness, lack of coordination, and being unable to repeat physical effort consistently.

A worsening of symptoms, more than would be accounted for by normal day-to-day variation, that affects the person's ability to perform their usual activities. Flare-ups may occur spontaneously or be triggered by another illness, overexertion or other triggers. Flare-ups usually occur as part of post-exertional malaise, but it is possible for other symptoms, such as pain, to flare-up without post-exertional malaise. The worsening of symptoms is transient, and flare-ups typically resolve after a few days, either spontaneously or in response to temporary changes in energy management or a change in treatment. A relapse lasts longer than a flare-up.

In this guideline, graded exercise therapy is defined as establishing a baseline of achievable exercise or physical activity and then making fixed incremental increases in the time spent being physically active. It is a therapy based on the deconditioning and exercise avoidance theories of ME/CFS. These theories assume that ME/CFS is perpetuated by reversible physiological changes of deconditioning and avoidance of activity. These changes result in the deconditioning being maintained and an increased perception of effort, leading to further inactivity. This definition of graded exercise therapy reflects the descriptions of it included in evidence review G: non-pharmacological management of ME/CFS.

These teams consist of a range of healthcare professionals with expertise in assessing, diagnosing, treating and managing ME/CFS. They commonly have medically trained clinicians from a variety of specialisms (including rheumatology, rehabilitation medicine, endocrinology, infectious diseases, neurology, immunology, general practice and paediatrics) as well as access to other healthcare professionals specialising in ME/CFS. These may include physiotherapists, exercise physiologists, occupational therapists, dietitians, and clinical or counselling psychologists. Children and young people are likely to be cared for under local or regional paediatric teams that have experience working with children and young people with ME/CFS in collaboration with ME/CFS specialist centres.

A clinical condition in which symptoms such as light-headedness, near-fainting or fainting, impaired concentration, headaches, dimming or blurring of vision, forceful beating of the heart, palpitations, tremulousness and chest pain occur or worsen on standing up and are improved (although not necessarily resolved) by sitting or lying down. Orthostatic intolerance may include postural orthostatic tachycardia syndrome (PoTS), which is a significant rise in pulse rate when moving from lying to standing, and postural hypotension, which is a significant fall in blood pressure when moving from lying to standing. People with severe orthostatic intolerance may find they are unable to sit up for any length of time.

Any bodily movement produced by skeletal muscles that results in energy expenditure. It should not be confused with exercise. Physical activity in daily life can be categorised into occupational, sports, conditioning, household or other activities, and can be done during leisure time, to get around or as part of a person's work. See World Health Organization advice on physical activity . Physical activity has a health benefit for most people and many conditions, but in people with ME/CFS, physical activity may make their symptoms worsen.

The process of incorporating into daily activities a level of movement that helps to maintain joint and muscle flexibility without worsening symptoms of ME/CFS. This aims to support people to have as much independence as possible in their activities, ranging from personal hygiene to activities of daily living, working and social interaction. Such movement is undertaken within the person's energy limits and avoids pushing through their boundaries of tolerance.

The worsening of symptoms that can follow minimal cognitive, physical, emotional or social activity, or activity that could previously be tolerated. Symptoms can typically worsen 12 to 48 hours after activity and last for days or even weeks, sometimes leading to a relapse. Post-exertional malaise may also be referred to as post-exertional symptom exacerbation.

A sustained and marked exacerbation of symptoms lasting longer than a flare-up and needing a substantial and sustained adjustment to the person's energy management. It may not be clear in the early stages of a symptom exacerbation whether it is a flare-up or a relapse. Relapses can lead to a long-term reduction in the person's energy limits.

A special interest in ME/CFS refers to a healthcare professional who is not working in an ME/CFS specialist team service but has knowledge and experience in this area.

This summarises the therapy and provides a basis for future independent self-management. The blueprint may include the therapy formulation, strategies that have been helpful, 'warning signs' and triggers of flare-ups and how to manage them, and goals for the future. It is important that the therapy blueprint is led by the person themselves and is in their own words, supported by guidance from the therapist.

Unrefreshing sleep means sleep that is non-restorative. Even after a full night's sleep, people do not feel refreshed. People with ME/CFS often report waking up exhausted and feeling as if they have not slept at all, no matter how long they were asleep.

END