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I think I may have ME/CFS
Something isn't right, and you're trying to understand what. That takes courage.
Guidance
- Post-exertional malaise (PEM): a worsening of symptoms after physical, mental, or emotional effort — often delayed by 12–72 hours. This is the defining feature of ME/CFS.
- Unrefreshing sleep: waking up feeling as tired as when you went to bed, regardless of hours slept.
- Cognitive difficulties: trouble concentrating, word-finding problems, feeling mentally foggy — often called "brain fog."
- Orthostatic intolerance: feeling faint, dizzy, or nauseous when standing, or needing to sit or lie down frequently.
- Keep a symptom diary for 2–4 weeks before your appointment. Note activity levels, sleep quality, and when symptoms flare.
If you read one thing
Standard · 3 min
What is ME/CFS?
A clear overview of the illness: definition, prevalence, and key features.
Read this →Recommended reads
More resources are available in the Atlas and Evidence sections.