Physical fatigue, or muscle fatigue, is the temporary physical inability of muscles to perform optimally. It is disputed whether there are different dimensions of fatigue, such as peripheral (muscle) and central (mental) fatigue, or whether fatigue is a uni-dimensional phenomenon that influences different aspects of human life. Profound and debilitating fatigue is the most common complaint reported among individuals with autoimmune disease, such as systemic lupus erythematosus, multiple sclerosis, type 1 diabetes, celiac disease, chronic fatigue syndrome, and rheumatoid arthritis. See also: Muscle fatigue By effect Overall life effect įatigue can have significant negative impacts on quality of life. Fatigue is often described as an uncomfortable tiredness, whereas sleepiness can be comfortable and inviting. Although sleepiness can be a symptom of a medical condition, it usually results from lack of restful sleep, or a lack of stimulation. Comparison with sleepiness įatigue is generally considered a more long-term condition than sleepiness (somnolence). More accurate terminology may also be needed to cover variants within the umbrella term of fatigue. The use of the term "fatigue" in medical contexts may carry inaccurate connotations from the general usage of the word. įatigue is multi-faceted and broadly defined, which makes understanding the cause of its manifestations especially difficult in conditions with diverse pathology including autoimmune diseases. Definition įatigue in a medical context is used to cover experiences of low energy that are not caused by normal life. Mental fatigue can also impair physical performance. Mental fatigue can manifest as sleepiness, lethargy, or directed attention fatigue.
Mental fatigue results from prolonged periods of cognitive activity which impairs cognitive ability. Physical fatigue results from muscle fatigue brought about by intense physical activity.
įatigue (in the general usage sense of normal tiredness) can include both physical and mental fatigue. It can also be associated with mental disorders such as depression. Fatigue may be associated with conditions of chronic pain such as fibromyalgia, and with many other conditions, including autoimmune diseases. įatigue (in a medical context) often has no known cause, and is recognised as being complex in nature.
When fatigue occurs independently of physical or mental exertion, or does not resolve after rest or sleep, it may have other causes, such as a medical condition. In general usage, fatigue often follows prolonged physical or mental activity. Internal medicine, family practice, psychiatry, psychologyĪvoid known stressors, avoid unhealthy habits such as: drug use, excessive alcohol consumption, smoking healthy diet, exercise regularly, medication, staying hydrated, and vitaminsįatigue describes a state of tiredness or exhaustion. Exhaustion, weariness, tiredness, lethargy, listlessness
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