Search

Glossary

Definition of medical terms used on the web.

Fatigue


Imminent sensation of severe tiredness and decreased working, physical and mental capacity, regardless of whether the need for sleep is covered. The defining features are: lack of energy and inability to perform usual activity, increased physical problems, impaired concentration capacity and decreased attention. It is also associated with emotional states from exposure to extreme psychological pressure. It may occur a few days after a chemotherapy treatment or after a surgery.