Chronic fatigue syndrome

Chronic fatigue syndrome
A debilitating and complex disorder characterized by profound fatigue of six months or longer duration that is not improved by bed rest and that may be worsened by physical or mental activity. Persons with chronic fatigue syndrome (CFS) most often function at a substantially lower level of activity than they were capable of before the onset of illness. In addition to these key defining characteristics, patients report various nonspecific symptoms, including weakness, muscle pain, impaired memory and/or mental concentration, insomnia and post-exertional fatigue lasting more than 24 hours. In some cases, CFS can persist for years. The cause or causes of CFS have not been identified and no specific diagnostic tests are available. Moreover, since many illnesses have incapacitating fatigue as a symptom, care must be taken to exclude other known and often treatable conditions before a diagnosis of CFS is made. Known also as Chronic Fatigue and Immune Dysfunction Syndrome (CFIDS) and as Myalgic Encephalomyelitis (ME), there has been some debate over the existence and causes of this

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chronic fatigue syndrome n a disorder of uncertain cause that is characterized by persistent profound fatigue usu. accompanied by impairment in short-term memory or concentration, sore throat, tender lymph nodes, muscle or joint pain, and headache unrelated to any preexisting medical condition and that typically has an onset at about 30 years of age abbr. CFS called also myalgic encephalomyelitis

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persistent debilitating fatigue lasting longer than six months, with other known medical conditions having been ruled out by clinical diagnosis, accompanied by at least four of the following: significantly impaired short-term memory or concentration, muscle weakness, pain in multiple joints without swelling or redness, sore throat, tender lymph nodes, headaches, unrefreshing sleep, and malaise that lasts more than 24 hours following exertion. The cause is unknown and may be multifactorial; immune dysfunction has been suggested, and viral infection may be associated with it, although no causal relationship has been demonstrated. A number of names have been used for this syndrome, including Iceland disease, myalgic or benign myalgic encephalomyelitis, chronic Epstein-Barr virus infection, chronic mononucleosis, and epidemic neuromyasthenia.

Medical dictionary. 2011.

Look at other dictionaries:

  • chronic fatigue syndrome — n. a debilitating medical condition without an apparent cause, characterized by prolonged severe fatigue, muscle pain, impaired memory, etc …   English World dictionary

  • Chronic fatigue syndrome — This article is about the medical condition Chronic fatigue syndrome. For the symptom chronic fatigue, see Fatigue (medical). Chronic fatigue syndrome Classification and external resources ICD 10 G93.3 ICD 9 …   Wikipedia

  • Chronic fatigue syndrome — Die Neutralität dieses Artikels oder Abschnitts ist umstritten. Eine Begründung steht auf der Diskussionsseite …   Deutsch Wikipedia

  • chronic fatigue syndrome — N UNCOUNT Chronic fatigue syndrome is an illness that is thought to be caused by a virus, and which affects people for a long period of time. Its symptoms include tiredness and aching muscles. The abbreviation CFS is often used. Syn: ME …   English dictionary

  • chronic fatigue syndrome — noun A condition characterized by immune, endocrine and neurologic pathology whose main symptoms are extreme fatigue, extremely low stamina, muscle pain, lymph node swelling, post exertional Malaise, and cognitive difficulties. Syn: myalgic… …   Wiktionary

  • chronic fatigue syndrome — chronic fa tigue .syndrome n [U] an illness that makes you feel very tired and weak and can last for a long time …   Dictionary of contemporary English

  • chronic fatigue syndrome — chronic fa tigue ,syndrome noun uncount an illness caused by a VIRUS that makes you feel tired and weak all the time: ME …   Usage of the words and phrases in modern English

  • chronic fatigue syndrome — a viral disease of the immune system, usu. characterized by debilitating fatigue and flu like symptoms. [1988] * * * also called  myalgic encephalomyelitis        disorder characterized by persistent debilitating fatigue. There exist two specific …   Universalium

  • chronic fatigue syndrome — noun a severe, systemic illness acquired after an apparently mild viral infection, and characterised chiefly by incapacitating fatigue but also by neurological, immunological and endocrinological dysfunction; post viral syndrome; ME. Abbrev.: CFS …   Australian English dictionary

  • chronic fatigue syndrome — chron′ic fatigue′ syn drome n. pat med a viral disease of the immune system, usu. characterized by debilitating fatigue and flu like symptoms • Etymology: 1990–95 …   From formal English to slang