What is Tiredness?

Fatigue (also called exhaustion, tiredness, languidness, languor, lassitude, and listlessness) is a subjective feeling of tiredness which is distinct from weakness, and has a gradual onset. Unlike weakness, fatigue can be alleviated by periods of rest. Fatigue can have physical or mental causes. Physical fatigue is the transient inability of a muscle to maintain optimal physical performance, and is made more severe by intense physical exercise. Mental fatigue is a transient decrease in maximal cognitive performance resulting from prolonged periods of cognitive activity. It can manifest as somnolence, lethargy, or directed attention fatigue.

Medically, fatigue is a non-specific symptom, which means that it has many possible causes. Fatigue is considered a symptom, rather than a sign because it is a subjective feeling reported by the patient, rather than an objective one that can be observed by others. Fatigue and 'feelings of fatigue' are often confused.

Questions and answers on "Tiredness"

hi,i have just come on my period but it is nine weeks late.i have always been regular and have some of the symptoms of being pregnant like...

doctor1 MD

Hallow Dear,

Negative pregnancy test at 9 weeks of delayed period is diagnostic of non-pregnant status. However, you may confirm it again with...

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The doctor has me on 9 mediation for blood pressure and the are making weaknee tiredness should I tell him ?

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