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Chapter 3 : Fungal Zoonoses
This chapter focuses on fungal zoonoses. Dermatophytoses are chronic fungal infections of the skin, hair, or nails. The genus Microsporum causes infectious human dermatophytoses and is also encountered in animals. The clinical presentation occurs in two clinical forms: tinea capitis and tinea corporis. Trichophyton infections, alopecia areata, alopecia specifica (syphilitica), erythema chronicum migrans, psoriasis vulgaris, granuloma annulare, pityriasis versicolor, seborrheic eczema, and candidiasis must be considered in the differential diagnosis. Trichophytosis is an infectious dermatomycosis of humans and animals due to Trichophyton spp., which induce either superficial cutaneous or subcutaneous inflammatory processes. The lesions are demarcated more clearly than those in other human infections with Trichophyton spp. The detection of Trichophyton spp., is possible only through culture. Infections with Microsporum and Epidermophyton, as well as erythema chronicum migrans, psoriasis, pityriasis versicolor, seborrheic eczema, contact eczema, and candidiasis must be considered in the differential diagnosis. The diagnosis of sporotrichosis is made by histology and/or culture of biopsy samples. Potassium iodide is the drug of choice for the treatment of cutaneous sporotrichosis.