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Acneiform eruptions caused by systemic and topical use of corticosteroids can be difficult to treat. Steroid acne shows clinical similarities to Pityrosporum folliculitis. Investigators in South Korea studied the presence of Pityrosporum ovale and the response to treatment with oral itraconazole in 34 patients with steroid acne, 21 with Pityrosporum folliculitis, and 20 with acne vulgaris.
Patients with steroid acne were similar in age (about 31 years), distribution of lesions (most on chest, upper back, and neck), and sex (male predominance of about 5:1), to those with Pityrosporum folliculitis. Patients with acne vulgaris were younger, most lesions were on the face, and females predominated, in a ratio of 2:1. P. ovale was identified by di…