Chronic Fatigue Syndrome

A syndrome characterized by persistent or recurrent fatigue, diffuse musculoskeletal pain, sleep disturbances, and subjective cognitive impairment of 6 months duration or longer. Symptoms are not caused by ongoing exertion; are not relieved by rest; and result in a substantial reduction of previous levels of occupational, educational, social, or personal activities. Minor alterations of immune, neuroendocrine, and autonomic function may be associated with this syndrome. There is also considerable overlap between this condition and FIBROMYALGIA. (From Semin Neurol 1998;18(2):237-42; Ann Intern Med 1994 Dec 15;121(12): 953-9)

Also Known As:

Myalgic Encephalomyelitis; Encephalomyelitis, Myalgic; Postviral Fatigue Syndrome; Fatigue Syndrome, Chronic; Chronic Fatigue Disorder; Chronic Fatigue and Immune Dysfunction Syndrome; Chronic Fatigue-Fibromyalgia Syndrome; Royal Free Disease; Systemic Exertion Intolerance Disease; Chronic Fatigue Disorders; Chronic Fatigue Fibromyalgia Syndrome; Chronic Fatigue Syndromes; Chronic Fatigue-Fibromyalgia Syndromes; Fatigue Disorder, Chronic; Fatigue Syndrome, Postviral; Fatigue Syndromes, Chronic; Fatigue-Fibromyalgia Syndrome, Chronic; Fatigue-Fibromyalgia Syndromes, Chronic; Infectious Mononucleosis Like Syndrome, Chronic; Postviral Fatigue Syndromes; Syndrome, Postviral Fatigue; Infectious Mononucleosis-Like Syndrome, Chronic

Musculoskeletal Diseases: 719
- Muscular Diseases: 10128
  - Chronic Fatigue Syndrome: 1559
Nervous System Diseases: 14178
- Neuroinflammatory Diseases: 18166
  - Encephalomyelitis: 1323
    - Chronic Fatigue Syndrome: 1559
- Neuromuscular Diseases: 2005
  - Chronic Fatigue Syndrome: 1559
Signs and Symptoms Pathological Conditions
- Pathologic Processes: 10023
  - Disease Attributes: 18
    - Chronic Disease: 25762
      - Chronic Fatigue Syndrome: 1559

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