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Fatigue in a medical context is used to cover experiences of low energy that are not caused by normal life. [2] [3]A 2021 review proposed a definition for fatigue as a starting point for discussion: "A multi-dimensional phenomenon in which the biophysiological, cognitive, motivational and emotional state of the body is affected resulting in significant impairment of the individual's ability to ...
Prolonged fatigue is fatigue that persists for more than a month, and chronic fatigue is fatigue that lasts at least six consecutive months, which may be caused by a physical or psychological illness, or may be idiopathic (no known cause). [1] Chronic fatigue with a known cause is twice as common as idiopathic chronic fatigue. [6]
Chronic fatigue, a long-term state of physical or mental exhaustion, a symptom of many chronic illnesses and of idiopathic chronic fatigue Myalgic encephalomyelitis/chronic fatigue syndrome , a discrete chronic medical condition characterized by post-exertional malaise , symptoms of profound intensity including fatigue, pain, and cognitive ...
The Canadian Consensus Criteria require "post exertional malaise and/or [post exertional] fatigue" instead. [21] [22] [23] [19] [24] On the other hand, the older Oxford Criteria lack any mention of PEM, [25] and the Fukuda Criteria consider it optional. Depending on the definition of ME/CFS used, PEM is present in 60 to 100% of ME/CFS patients. [6]
Many names have been proposed for the illness. The most commonly used are chronic fatigue syndrome, myalgic encephalomyelitis, and the umbrella term myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Reaching consensus on a name has been challenging because the cause and pathology remain unknown.
Despite ample evidence that ME/CFS is an organic disease, many clinicians do not recognise it as genuine or underestimate its seriousness. [8] [5] [6] A 2020 literature review found that “a third to a half of all GPs did not accept ME/CFS as a genuine clinical entity and, even when they did, they lacked confidence in diagnosing or managing it.” [6]
Although PowerPoint by this point had become part of the integrated Microsoft Office product, its development remained in Silicon Valley. Succeeding versions of PowerPoint introduced important changes, particularly version 12.0 (2007) which had a very different shared Office " ribbon " user interface, and a new shared Office XML-based file ...
Uhthoff's phenomenon (also known as Uhthoff's syndrome, [1] Uhthoff's sign, [1] and Uhthoff's symptom) is the worsening of neurologic symptoms in multiple sclerosis (MS) and other demyelinating diseases when the body is overheated.