How to Explain Chronic Fatigue to Your Doctor
Chronic fatigue — especially in the context of ME/CFS — is one of the most misunderstood and dismissed conditions in primary care. Many patients are told it is "just stress" or given lifestyle advice before proper investigation. The key to being taken seriously is specificity: not "I'm tired all the time" but "I experience post-exertional malaise — a worsening of all symptoms 12–48 hours after even minor exertion — that can leave me bed-bound for days." This guide helps you build that vocabulary.
Reviewed by the Brief My Doctor editorial team · Last updated June 2026
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What to tell your doctor
- 1When the fatigue started and whether it began after a viral illness or other identifiable event
- 2Whether you experience post-exertional malaise (PEM) — worsening of symptoms after physical or mental effort
- 3How sleep affects you: do you feel unrefreshed after a full night's sleep?
- 4Cognitive symptoms: brain fog, difficulty concentrating, memory issues, word-finding problems
- 5Orthostatic intolerance: do you feel worse standing up, get dizzy, or have a rapid heartbeat when upright?
- 6Pain symptoms: widespread aches, headaches, sore lymph nodes
- 7How symptoms have changed your daily function compared to before
Questions to ask your doctor
- Q1.Are you familiar with the NICE 2021 guidelines for ME/CFS?
- Q2.What investigations do you recommend to rule out other causes?
- Q3.Would you be willing to refer me to a specialist ME/CFS clinic?
- Q4.Is graded exercise therapy (GET) appropriate given the current evidence on PEM?
- Q5.What reasonable adjustments can I request from my employer or school?
- Q6.How should I manage flares — is there a protocol you recommend?
Don't forget to bring
- ✓A detailed activity diary showing what triggers crashes and how long recovery takes
- ✓Sleep diary for at least 2 weeks
- ✓Any previous blood test results: thyroid, ferritin, B12, folate, inflammatory markers
- ✓List of any treatments already tried: pacing, supplements, medications
- ✓How long you have had these symptoms and the trajectory (stable, worsening, fluctuating)
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