An illness without a known cause that is characterized by long-term exhaustion, muscle weakness, depression, and sleep disturbance. It is often associated with Fibromyalgia and Myofascial Pain Syndrome. It is often precipitated by physical, viral or psychosocial injury or stress.
Chronic fatigue syndrome (CFS) is a syndrome usually 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. CFS is characterized as a debilitating and profound syndrome not alleviated by regular bed rest.
a complex disorder characterized by extreme fatigue that lasts six months or longer, and does not improve with rest or is worsened by physical or mental activity. Other symptoms can include weakness, muscle pain, impaired memory and/or mental concentration, and insomnia. The cause is unknown.
A condition often following viral infection or induced by an unrecognised virus.
syndrome that begins with flu-like symptoms followed by months or years of lethargy, weakness, and inability to concentrate. Misdiagnosed as "imaginary" for nearly a century, it has had various names, including the "yuppie flu" in the mid-1980s. Although many patients exhibit signs of brain inflammation, hormonal deficits, immune system abnormalities, and viral infections, the exact cause is unknown. 1
A serious and disabling illness its symptoms are severe and persistent exhaustion, which worsens following exercise and does not resolve with rest. It is not simply chronic fatigue, which can be caused by insufficient sleep or overwork.
or Chronic Fatigue and Immune Dysfunction Syndrome (CFIDS)—The clinical syndrome defined by a consensus panel in 1994 that includes a series of symptoms, especially fatigue, felt to represent a distinct clinical entity
a condition of incapacitating fatigue. It may be associated with migraines.
CFS (Chronic Fatigue Syndrome) is a disorder of unknown cause that lasts for prolonged periods and causes extreme and debilitating exhaustion as well as a wide range of other symptoms such as fever, headache, muscle ache and joint pain, often resembling flu and other viral infections. Also known as Chronic Fatigue and Immune Dysfunction Syndrome (CFIDS), Chronic Epstein-Barr Virus (CEBV), Myalgic Encephalomyelitis (ME), "Yuppy Flu" and other names, it is frequently misdiagnosed as hypochondria, psychosomatic illness, or depression, because routine medical tests do not detect any problems.
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. See the entire definition of Chronic fatigue syndrome
A very severe and long-term feeling of weakness and being tired, even after getting rest.
An emerging condition characterized by debilitating fatigue (experienced as exhaustion and extremely poor stamina), neurological problems, and a variety of flu-like symptoms. It is also known as chronic fatigue immune dysfunction syndrome and myalgic encephalomyelitis. The core symptoms include excessive fatigue that is not relieved by rest, general pain, mental fogginess, and often gastrointestinal problems. Many other symptoms may also be present but will typically be different among individuals. These include: fatigue following stressful activities, headaches, sore throat, sleep disorders, and abnormal temperature. The degree of severity can differ widely among individuals, and will also vary over time for the same person. This variation, in addition to the fact that its cause is not yet known, makes this syndrome difficult to diagnose.
(CFS): A serious and debilitating condition which combines extreme exhaustion with an array of other symptoms.
a collection of symptoms including tiredness, weakness and muscle pain is called chronic fatigue syndrome; the cause of this condition is not known, although some suspect it is due to environmental sensitivities
Refers to a state of constant and severe exhaustion which is often seen in association with fibromyalgia syndrome. Whether there is a separate entity with a yet undiscovered cause still is controversial.
Chronic Fatigue Syndrome consists of extreme fatigue that is accompanied by a host of other symptoms that often develop simultaneously. These symptoms often have a rapid onset, frequently following an infection. Research has shown that CFS is tied directly to immune-related disorders and/or dysfunctions.
A condition marked by fatigue, post-exertional malaise and/or fatigue, sleep dysfunction, pain, two or more neurologic or cognitive manifestations, and one or more autonomic, neuroendocrine and immune manifestations (see CFS, Clinical Case Definition). For a diagnosis of chronic fatigue syndrome, the person must have the symptoms for at least 6 months in adults and 3 months in children. Other active disease processes must have been excluded.
Chronic fatigue syndrome (CFS), also known as myalgic encephalomyelitis (ME), post-viral fatigue syndrome (PVFS), and various other names, is a syndrome (or group of syndromes) of unknown and possibly multiple etiologies, affecting the central nervous system (CNS), immune, and many other systems and organs. There is no simple diagnostic test; CFS is a diagnosis of exclusion, although recent research indicates biological hallmarks of the syndrome, and a diagnostic test is predicted soon. Most definitions (other than the 1991 UK Oxford criteria (http://www.meassociation.org.uk/symptoms.htm#OXFORDDEF details, http://www.cfids-cab.org/cfs-inform/CFS.case.def/oxford.criteria91.txt details)) require a number of features, the most common being severe mental and physical exhaustion or depletion which is "unrelieved by rest" (according to the 1994 Fukuda definition), http://www.annals.org/cgi/content/full/121/12/953#F2 case definition and is often worsened by even trivial exertion (controversially, the Oxford and Fukuda criteria require this to be optional only).