Fatigue is a condition characterized by excessive wearyness, lethargy, and exhaustion; it is frequently the result of mental or physical exertion. It is a prevalent phenomenon that can vary in intensity from faint to severe, persist temporarily or permanently.

A variety of factors, including sleep deprivation, physical overexertion, tension, illness, and specific medical conditions, can contribute to fatigue. Fatigue can be classified into two primary categories, namely peripheral fatigue and central fatigue, from a physiological standpoint.

Peripheral fatigue is associated with muscular factors, such as metabolite accumulation or energy depletion, whereas central fatigue is cerebral in nature and is susceptible to psychological and neural influences. The phrase "compassion fatigue," which refers to the emotional exhaustion that can result from providing care for others, especially in professions such as social work or healthcare, is another example of the term's broader application.

Furthermore, the term "mental fatigue" pertains to a condition of extreme lethargy that predominantly impairs cognitive processes, including memory and concentration. Comprehending the fundamental origins of fatigue is critical in order to effectively address and manage it.

This can be achieved through various means, including lifestyle modifications, sleep enhancements, stress control, and, if necessary, medical intervention. .