- A state characterized by a lessened capacity for work and reduced efficiency of accomplishment, usually accompanied by a feeling of weariness and tiredness. "Fatigue" is a favorite medical word. When a patient says they have been feeling unusually tired, "real tired," the doctor will usually write down that the patient presents with "fatigue."
* * *1. That state, following a period of mental or bodily activity, characterized by a lessened capacity for work and reduced efficiency of accomplishment, usually accompanied by a feeling of weariness, sleepiness, or irritability; may also supervene when, from any cause, energy expenditure outstrips restorative processes and may be confined to a single organ. 2. Sensation of boredom and lassitude due to absence of stimulation, monotony, or lack of interest in one's surroundings. [Fr., fr. L. fatigo, to tire]- battle f. a term used to denote psychiatric illness consequent to the stresses of battle. SYN: shell shock.
* * *fa·tigue fə-'tēg n1) weariness or exhaustion from labor, exertion, or stress2) the temporary loss of power to respond induced in a sensory receptor or motor end organ by continued stimulation1) to weary with labor or exertion2) to induce a condition of fatigue in (as an effector organ) vi to be affected with fatigue: become weary
* * *n.1. mental or physical tiredness, following prolonged or intense activity. Muscle fatigue may be due to the waste products of metabolism accumulating in the muscles faster than they can be removed by the venous blood. Incorrect or inadequate food intake or disease may predispose a person to fatigue.2. the inability of an organism, an organ, or a tissue to give a normal response to a stimulus until a certain recovery period has elapsed.
* * *fa·tigue (fə-tēgґ) [Fr.; L. fatigatio] 1. a state of increased discomfort and decreased efficiency resulting from prolonged or excessive exertion; loss of power or capacity to respond to stimulation. 2. the gradual fracturing of a material due to repetitive or cyclic stress.
Medical dictionary. 2011.