Fungal infection

Last updated: Wednesday, 01, December, 2010
Key InformationAppropriate Tests

See also CandidiasisAspergillosis.

Superficial

Tinea versicolor

Testing rarely indicated; fungal microscopy and culture (Malassezia furfur) of skin scrapings in doubtful cases.

Dermatophytic

  • Tinea (including  ringworm)

Fungal microscopy and culture of skin scrapings, hair, nail clippings as appropriate. Skin biopsy only occasionally indicated

Deep, disseminated

Blood, CSF, urine, sputum, tissue biopsy or body fluid - fungal microscopy and culture

Cryptococcal antigen (serum and CSF) if indicated.

Predisposing factors include

If mucormycosis suspected: urgent lesion biopsy and sterile fluid, fungal microscopy and culture, consult pathologist.

  • Malignancy
  • Intravenous drug abuse
  • Broad spectrum antibiotic therapy
  • Indwelling catheter or prosthesis