Chronic fatigue syndrome (CFS) is the most common name given to a variably debilitating disorder or disorders generally defined by persistent fatigue unrelated to exertion and not substantially relieved by rest, and accompanied by the presence of other specific symptoms for a minimum of six months. The disorder may also be referred to as post-viral fatigue syndrome (PVFS, when the condition arises following a flu-like illness), myalgic encephalom...
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Chronic fatigue syndrome (CFS) is the most common name given to a variably debilitating disorder or disorders generally defined by persistent fatigue unrelated to exertion and not substantially relieved by rest, and accompanied by the presence of other specific symptoms for a minimum of six months. The disorder may also be referred to as post-viral fatigue syndrome (PVFS, when the condition arises following a flu-like illness), myalgic encephalomyelitis (ME), or several other terms. The etiology (cause or origin) of CFS is currently unknown and there is no diagnostic laboratory test or biomarker.
Fatigue is a common symptom in many illnesses, but CFS is a multi-systemic disease and is relatively rare by comparison. Symptoms of CFS include widespread muscle and joint pain; cognitive difficulties; chronic, often severe, mental and physical exhaustion; and other characteristic symptoms in a previously healthy and active person. CFS patients may report additional symptoms including muscle...
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