Introduction Clinical Presentation Definition Distribution Etiology Index of Names Media & Methods Glossary Case Study References

Trichophyton verrucosum

Colonial Morphology	Microscopic Morphology Phase Contrast	Biochemical Reactions: BCP, SDA and Urease
rate: slow, better at 35°C texture: waxy or glabrous,heaped or flat thallus color: white, grey or yellow reverse: colorless variants: var ochraceum - flat, yellow, glabrous var discoides - flat, downy, grey-white	pyriform microconidia, may not be present rare rat tail shaped macroconidia characteristic chains of chlamydospores at 35°C antler hyphae form on SDA	BCP: restricted/ no change/ hydrolysis Urease: positive (variable) Vitamin requirement: thiamine and inositol Hair perforation: negative Improved growth at 35°C
Compare to and Differentiate from: from T. schloenleinii: vitamin requirements from T. violaceum: inositol, chains of chlamydospores at 35°C from T. yaoundei: vitamin requirements	Etiology & Ecology zoophilic - cattle and other domestic and wild animals worldwide scalp, beard, body, occasionally nails ectothrix etiology of other dermatophytes