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| | Chronic fatigue syndrome - Wikipedia, the free encyclopedia |
 | | Chronic fatigue syndrome (CFS), also known as myalgic encephalomyelitis (ME), post-viral fatigue syndrome (PVFS) and various other names, is an organic disorder of unknown and possibly multiple etiology, affecting the central nervous system (CNS), immune system, and many other functions. |
 | | CFS is characterized by a number of features, the most common and notable one being severe mental and physical fatigue, which is unrelieved by rest, and usually made worse by even modest exertion. |
 | | Originally studied since the late 1930s as an immunological neurological disorder under the medical term "myalgic encephalomyelitis" (ME), CFS has been classified by the World Health Organization (WHO) as a disease of the central nervous system since 1969. |
| en.wikipedia.org /wiki/Myalgic_Encephalomyelitis (6832 words) |
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