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Hans Selye defined stress as “the nonspecific (that is, common) result of any demand upon the body, be the effect mental or somatic.” [5] This includes the medical definition of stress as a physical demand and the colloquial definition of stress as a psychological demand. A stressor is inherently neutral meaning that the same stressor can ...
Fatigue is a state of tiredness (which is not sleepiness), exhaustion [1] or loss of energy. [2] [3]Fatigue (in the medical sense) is sometimes associated with medical conditions including autoimmune disease, organ failure, chronic pain conditions, mood disorders, heart disease, infectious diseases, and post-infectious-disease states. [4]
People with ME/CFS experience persistent debilitating fatigue. It is made worse by normal physical, mental, emotional, and social activity, and is not a result of ongoing overexertion. [3] [2]: 12 Rest provides limited relief from fatigue. Particularly in the initial period of illness, this fatigue is described as "flu-like".
Health Complications of Stress. Elevated levels of cortisol and chronic stress increase your risk of physical health problems.. Since a stress response can increase your heart rate and blood ...
Classified as a "conversion disorder" by the DSM-IV, a psychogenic disease is a condition in which mental stressors cause physical symptoms matching other disorders. The manifestation of physical symptoms without biologically identifiable cause results from disruptions in normal brain function due to psychological stress.
A primary target of stress is the brain. When exposed to stress, it serves as the centre to interpret the stressors and determine the appropriate behavioural and psychological responses. [7] Therefore, exposure to chronic stress will have a direct impact on brain function. [7]
Chronic stress also causes brain atrophy, which is the loss of neurons and the connections between them. It affects the part of the brain that is important for learning, responding to the stressors and cognitive flexibility.
Fibromyalgia was defined relatively recently. In the past, it was a disputed diagnosis. Rheumatologist Frederick Wolfe, lead author of the 1990 paper that first defined the diagnostic guidelines for fibromyalgia, stated in 2008 that he believed it "clearly" not to be a disease but instead a physical response to depression and stress. [253]