Infectious Disease Compendium

Trichophyton

Microbiology

Fungi, includes T. ajelloi, T. concentricum, T. equinum, T. erinacei, T. gourvilii, T. megnini, T. mentagrophytes, T. mentagrophytes interdigitale, T. quinckeanum, T. rubrum, T. schoenleinii, T. simii, T. soudanense, T. terrestre, T. tonsurans, T. verrucosum, T. violaceum, T. yaoundeids.

Epidemiologic Risks

They cause dermatophytosis, superficial infections of the skin and nails. Human to human spread.

Syndromes

Dermatophytosis is an annular scaling patch with a raised margin showing a variable degree of inflammation, the center often less inflamed than the edge. Tinea refers to dermatophyte infections then followed by the Latin word for the site of infection. Dermatologists cannot use plain old English.

Tinea capitus aka Scalp ringworm: T. gourvilii, T. tonsurans, T. soudanense, T. schoenleinii, T. verrucosum, T. violaceum.

Tinea pedis is usually caused by infection with either T. rubrum or T. mentagrophytes (interdigitale).

Tinea cruris aka called jock itch: T. rubrum and T. verrucosum.

Tinea corporis aka ringworm. Tinea imbricata is a variant of tinea corporis that is caused by T. concentricum.

Tinea manuum T. rubrum. Tinea faciei: T. rubrum.

Tinea barbae: T. verrucosum and others.

Onychomycosis, aka fungal infection of the nails T. mentagrophyte T. soudanens T. rubrum.

Treatment

Topical agents: tolnaftate, miconazole, clotrimazole, econazole, tioconazole, ketoconazole, oxiconazole, bifonazole, isoconazole, terbinafine, butenafine, and naftifine for 2 to 4 weeks.

Oral antifungals used for dermatophytosis are terbinafine, itraconazole, fluconazole and griseofulvin.

Onychomycosis: terbinafine or itraconazole for 2 to 4 months.

Notes