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Iron-deficiency anemia is anemia caused by a lack of iron. [3] Anemia is defined as a decrease in the number of red blood cells or the amount of hemoglobin in the blood. [3] When onset is slow, symptoms are often vague such as feeling tired, weak, short of breath, or having decreased ability to exercise. [1]
Severe fatigue may come on suddenly and make it difficult to be active at all. [35] The impact of fatigue can be severe and pose more of a problem than the pain. [37] Fatigue is a complicated, multifactorial, and vexing symptom that is highly prevalent (76%) and stubbornly persistent, as evidenced by longitudinal studies over 5 years. [38]
In medicine, malaise is a feeling of general discomfort, uneasiness or lack of wellbeing and often the first sign of an infection or other disease. [1] It is considered a vague term – describing the state of simply not feeling well. The word has existed in French since at least the 12th century.
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 ...
He was, however, unable to explain the reason why, and his assertion had no impact on the prevailing opinion of the influential physicians of the age, that scurvy was a digestive complaint. Besides ocean travel, even in Europe, until the late Middle Ages, scurvy was common in late winter, when few green vegetables, fruits, and root vegetables ...
In 2003, the American psychiatrists Philip M. Liu and David A. Van Liew [50] advanced the view that the concept of burnout is largely bereft of meaning and has often come to refer to "stress-induced unhappiness" with one's job. They, however, also wrote that burnout can mean "everything from fatigue to a major depression and now seems to have ...
Decision fatigue is a phrase popularised by John Tierney, and is the tendency for peoples’ decision making to become impaired as a result of having recently taken multiple decisions. [5] Decision fatigue has been hypothesised to be a symptom, or a result of ego depletion. [6]
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]