Prolonged fungal fever is caused by a fungal agent. Prolonged fungal fever usually lasts for weeks, in some cases for months. Prolonged fungal fever may be due to candida albicans bacteremia or torulose.

Prolonged fever due to deep abscess infection is one of the common causes of prolonged fever. Infected abscesses can be difficult to detect, the deeper the abscess, the more frequent and thorough the examination is needed for proper diagnosis and treatment.