Chronic fatigue syndrome

CFS; Fatigue - chronic; Immune dysfunction syndrome; Myalgic encephalomyelitis (ME); Myalgic encephalopathy chronic fatigue syndrome (ME-CFS); Systemic exertion intolerance disease (SEID)

Systemic exertion intolerance disease/chronic fatigue syndrome (SEID/CFS) is a long-term illness that affects many body systems. People with this illness are not able to do their usual activities. Sometimes, they may be confined to bed.

One common symptom is severe fatigue. It does not get better with rest and is not directly caused by other medical problems. Other symptoms can include problems with thinking and concentrating, pain, and dizziness.

Causes

Symptoms

Exams and Tests

Treatment

Support Groups

Outlook (Prognosis)

Possible Complications

When to Contact a Medical Professional