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Malassezia species belong to resident fungi of normal human skin. They can cause infantile pityraisis versicolor, and are related to infantile seborrheic dermatitis, infantile atopic dermatitis, neonatal cephalic pustulosisa, infantile acne and acne neonatroum. Most of the evidence of this association lies in the isolation of malassezia from the lesions and the efficacy of antifungal drugs. Malassezia acts as an allergen in the pathogenesis of infantile atopic dermatitis. Since the barrier and immune function of infantile skin are immature, the clinical features of these diseases in infants are atypical or different from those in adults, and topical treatment is the main choice of management.