Chromomycosis

• Also called Phaeohyphomycosis

• Opportunistic

• Infects horses, dogs and humans
  • Found in wounds and abrasions

• Caused by dematiaceous fungi
  • Dactylaria gallopava, Exophiala pisciphila, E. salmonis, Scolecobasidium humicola, S. tshawytschae, Drechslera, Exophilia jeanselmeri, E. verrucosa, Fonsecaea pelrosoi

• Nodular and ulcerating lesions of the skin on the feet, legs and occasionally eyes (in turkeys)
  • Regional granulomatous lymphadenitis

• Single cells or clusters, spherical and thick-walled
• Brown pigmented fungal elements

• Multiply by cross-wall formation or splitting (not budding)

• Grows on Sabauraud's Dextrose agar ar room temperature
  • Slow growth
  • Takes one month

• For further information, see dematiaceous fungi