This document summarizes current knowledge about diagnosis and treatment of candidiasis affecting the skin and oral mucosa. Several clinical forms of mucocutaneous candidiasis are distinguished depending on a patient\'s age and infected site, e.g. Candida intertrigo, erythema mycoticum infantile, erosio interdigitalis blastomycetica, candidal paronychia and onychia, Candida onychomycosis, and oral candidiasis. The diagnosis of candidiasis is confirmed by observation of mycelial forms on microscopic examination. Since Candida yeasts (especially C. albicans) are normal inhabitants of the skin and oral mucosa, it must always be noted that positive culture does not always indicate the presence of candidal infection. The pathogenicity of Candida species is relatively low, and some special conditions are required for tissue invasion by the fungus. Predisposing factors, such as disturbances of the cutaneous and mucosal microenvironment and systemic or local immunosuppression, should be checked in patients with recurrent infection. Therapy for cutaneous candidiasis is dominated by topical antifungal agents. Azole antifungal cream (e.g., bifonazole, ketoconazole, neticonazole hydrochloride, lanoconazole and luliconazole) is most effective. Terbinafine hydrochloride and amorolfine hydrochloride are also useful. Cutaneous candidiasis usually requires a shorter duration of topical treatment (1-2 weeks) than superficial dermatophyte infections. For candidal paronychia and onychomycosis, oral therapy with itraconazole is recommended. The daily dose of itraconazole should be taken for several months, while its pulse therapy for candidiasis is not approved in Japan. Itraconazole oral solution is commonly used for oral candidiasis, and miconazole gel is also effective.

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