Playbook
What should I actually do about ME/CFS?
ME/CFS (myalgic encephalomyelitis / chronic fatigue syndrome) is a real, disabling physiological illness, not a psychological one, and it is more common in women. There is no cure, but there is a clear, evidence-based way to manage it, and, just as importantly, an approach to avoid that can make it worse.
ME/CFS · reviewed July 2026 · 11 cited papers
See a clinician promptly if
- !A profound, delayed crash after minor exertion (post-exertional malaise). This is the hallmark of ME/CFS and it specifically means that being pushed to increase activity can harm you.
- !Fainting, a racing heart, or severe dizziness on standing. Suggests orthostatic intolerance or POTS, which is testable and treatable and often overlaps with ME/CFS.
- !Severe low mood, hopelessness, or thoughts of self-harm. Living with a disabling, often-dismissed illness is hard, and this deserves prompt mental health support.
Step 1
Is it ME/CFS?
The defining feature is post-exertional malaise: a delayed crash after exertion. These are the patterns that point to ME/CFS, the overlapping conditions to recognize, and the reversible causes worth excluding first.
Step 2
What to get checked
There is no single test for ME/CFS, so testing is mainly to exclude other treatable causes of fatigue and to identify overlapping conditions.
Thyroid, full blood count, ferritin, and basic metabolic tests
Excludes common, treatable causes of fatigue such as thyroid disease, anemia, and low iron.
A standing test for orthostatic intolerance or POTS
Checking heart rate and symptoms lying versus standing can identify a treatable overlapping condition.
Screening for sleep disorders if suggested
Unrefreshing sleep is core to ME/CFS, but a separate treatable sleep disorder like apnea should be ruled out.
Step 3
What actually helps (and what to avoid)
There is no cure, and the single most important principle is to manage energy rather than push through. The approach that helps and the approach to avoid are both well defined.
Pacing and staying within your energy envelope
The core strategy: learn your limits and stay within them, resting before you crash rather than pushing through. Tracking activity (sometimes with a heart-rate monitor) helps you avoid the exertion that triggers post-exertional malaise.
How to get itSelf-management, ideally with an occupational therapist experienced in ME/CFS.
Treat overlapping and reversible conditions
Managing orthostatic intolerance or POTS (with fluids, salt, compression, and sometimes medication), correcting iron or thyroid problems, and improving sleep can meaningfully reduce the overall burden.
Symptom-focused support
Targeted help for sleep, pain, and mood, and practical support for daily life. Supportive counseling can help with coping, but it is not a cure and does not mean the illness is psychological.
Graded exercise therapy as a cure
Programs that push you to steadily increase activity regardless of symptoms are no longer recommended: the 2021 NICE guideline dropped graded exercise therapy, and reanalysis of the main supporting trial found its benefits were overstated. Fixed activity increases can trigger crashes.
CautionsIf offered an exercise program, ask whether it forces increases regardless of how you feel, and decline that approach.
Set your expectations
- There is no cure yet; the realistic goal is stability and fewer crashes through careful energy management.
- Post-exertional malaise means "push through it" advice is the wrong model and can cause lasting setbacks.
- Treating overlapping problems (POTS, sleep, iron, thyroid) can genuinely reduce your overall burden.
- Being taken seriously matters: this is a recognized physiological illness with measurable biological abnormalities.
Step 4
Take this to your doctor
“I have long-standing exhaustion with a delayed crash after exertion, unrefreshing sleep, and brain fog, and I would like to be assessed for ME/CFS and have other causes ruled out.”
Questions to ask
- Do my symptoms, especially post-exertional malaise, fit the diagnostic criteria for ME/CFS?
- Can we exclude thyroid, anemia, and sleep problems, and test me for orthostatic intolerance?
- Can you help me learn pacing rather than recommending graded exercise?
- Will you document post-exertional malaise so future care reflects it?
What to bring
- A log showing how your function dropped and how you crash after exertion
- Notes on symptoms lying versus standing, and your sleep quality
- A list of what you have already tried and how you responded
When to push. Ask for referral to a clinician experienced in ME/CFS, for assessment of orthostatic intolerance, and against being enrolled in a graded-exercise program that ignores your symptoms.
Step 5
Where the science is going
Biological research and cautious drug trials
Intensive studies have found measurable immune, autonomic, and brain differences in ME/CFS, reinforcing that it is physical. Some patients try low-dose naltrexone, but the evidence is only case-level, so it remains experimental and off-label.
All sources
Every claim above links to peer-reviewed research. Full list below.
- Beyond Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: Redefining an Illness (2015). National Academies Press (Institute of Medicine). doi.org/10.17226/19012
- Characterization of Post-exertional Malaise in Patients With Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (2020). Frontiers in Neurology. doi.org/10.3389/fneur.2020.01025
- Energy Conservation/Envelope Theory Interventions to Help Patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (2013). Fatigue: Biomedicine, Health & Behavior. doi.org/10.1080/21641846.2012.733602
- What Primary Care Practitioners Need to Know about the New NICE Guideline for Myalgic Encephalomyelitis/Chronic Fatigue Syndrome in Adults (2022). Healthcare (Basel). doi.org/10.3390/healthcare10122438
- Rethinking the treatment of chronic fatigue syndrome-a reanalysis and evaluation of findings from a recent major trial of graded exercise and CBT (2018). BMC Psychology. doi.org/10.1186/s40359-018-0218-3
- Long COVID and Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS)-A Systemic Review and Comparison of Clinical Presentation and Symptomatology (2021). Medicina (Kaunas). doi.org/10.3390/medicina57050418
- Orthostatic intolerance in chronic fatigue syndrome (2019). Journal of Translational Medicine. doi.org/10.1186/s12967-019-1935-y
- Myalgic Encephalomyelitis/Chronic Fatigue Syndrome in Adults: United States, 2021-2022 (2023). NCHS Data Brief (National Center for Health Statistics, CDC).
- Deep phenotyping of post-infectious myalgic encephalomyelitis/chronic fatigue syndrome (2024). Nature Communications. doi.org/10.1038/s41467-024-45107-3
- Systematic Review of Sleep Characteristics in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (2021). Healthcare (Basel). doi.org/10.3390/healthcare9050568
- Low-dose naltrexone as a treatment for chronic fatigue syndrome (2020). BMJ Case Reports. doi.org/10.1136/bcr-2019-232502
This playbook is educational and is not medical advice. Hair loss has many causes and individual treatment decisions belong with a clinician who can examine you.