Trichophyton benhamiae

Introduction

Etiologic agent of Tinea facei

Epidemiology

• transmitted to humans mostly from guinea pigs
• transmission also may occur from cats, dogs, rabbits, rodents, & hedgehogs

Laboratory

• cultures on Sabouraud dextrose agar & lactophenol cotton blue stain
  • septate hyaline hyphae
  • spherical microconidia
    • arranged likes grapes
    • or inserting laterally & terminally at the hyphae*
• DNA sequencing of the internal transcribed spacer region of the ribosomal DNA for confirmation

* image

More general terms

• Trichophyton