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A severe, unremitting type of chronic ringworm of the scalp and nails, with scarring and formation of crusts called scutula, caused by three dissimilar dermatophytes, Trichophyton schoenleinii (most commonly), T. violaceum, and Microsporum gypseum; it occurs more frequently in the Mediterranean countries, southeastern Europe, southern Asia, and northern Africa.
honeycomb ringworm(1) Favus, see there.
(2) Kerion, see there.
a mosaic of closely packed units with depressed centers giving a honeycomb appearance.
an infection of the superficial layers of the skin and the hair fibers with one of a group of dermatophytic fungi. Some of the fungi are obligate parasites of animals, others have the same relationship with humans, and some are freeliving in the soil and only invade animal skins in unusual circumstances. See also tinea. The common species are trichophytonverrucosum in cattle, T. equinum in horses; in dogs and cats the infections are microsporumcanis, M. gypseum and T. mentagrophytes. In sheep and goats the infection is usually T. verrucosum and in pigs M. nanum.
The infection is very superficial and does almost no injury to animals but efforts are usually made to prevent its spread because it is highly infectious, including for humans. In companion animals this zoonotic aspect is very important in management of cases. Called also dermatophytosis.