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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 ...
Main symptoms of multiple sclerosis Symptoms and findings in multiple sclerosis. The signs and symptoms of multiple sclerosis (MS) encompass a wide range of neurological and physical manifestations, including vision problems, muscle weakness, coordination difficulties, and cognitive impairment, varying significantly in severity and progression among individuals.
Central nervous system fatigue, or central fatigue, is a form of fatigue that is associated with changes in the synaptic concentration of neurotransmitters within the central nervous system (CNS; including the brain and spinal cord) which affects exercise performance and muscle function and cannot be explained by peripheral factors that affect muscle function.
fatigue – this is common in autoimmune diseases, and is the patient's primary concern [9] malaise; fever [10] These can be the initial presentation for some patients. [3] Other symptoms associated with UCTD include : [11] joint pain – the most common symptom, occurring in up to 86% of patients. [3]
The Lake Tahoe outbreak became the subject of several studies by Peterson and others. In 1995, Peterson and other investigators started conducting a 10-year follow-up study on patients seen during the outbreak. The study results were published in 2001 by the Journal of Chronic Fatigue Syndrome. [6]
Muscle fatigue is when muscles that were initially generating a normal amount of force, then experience a declining ability to generate force. It can be a result of vigorous exercise , but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction .
Directed attention fatigue (DAF) is a neuro-psychological phenomenon that results from overuse of the brain's inhibitory attention mechanisms, which handle incoming distractions while maintaining focus on a specific task. The greatest threat to a given focus of attention is competition from other stimuli that can cause a shift in focus.
Since odor detection may be an indicator that exposure to certain chemicals is occurring, olfactory fatigue can also reduce one's awareness about chemical hazard exposure. Olfactory fatigue is an example of neural adaptation. The body becomes desensitized to stimuli to prevent the overloading of the nervous system, thus allowing it to respond ...