Myalgic encephalomyelitis/chronic fatigue syndrome

Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a disease that causes someone to feel so ill that they can't do their normal daily activities. People with ME/CFS have problems sleeping and extreme fatigue that doesn't get better with rest. Any kind of activity often makes their symptoms worse. This is called post-exertional malaise. They may have other symptoms like problems with thinking.

Another name for this condition is systemic exertion intolerance disease (SEID).

Is it an emergency?

If you or someone in your care has chest pains, difficulty breathing, or severe bleeding, it could be a life-threatening emergency. Call 9-1-1 or the local emergency number immediately.
If you are concerned about a possible poisoning or exposure to a toxic substance, call Poison Control now at 1-800-567-8911.

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