Infantile Seborrhoeic Dermatitis

Infantile seborrhoeic dermatitis (ISD) is an erythematosquamous skin disease of early infancy. This eruption is characterized by thick adherent yellowish scales predominantly in the frontal and/or vertex areas of the scalp that may be accompanied by rash of the intertriginous areas. These objective features and absence of pruritus are commonly considered the diagnostic criteria for ISD. Being these criteria are quite poor and non-specific to define a disorder, some authors consider ISD a transient phenomenon that can fade spontaneously or lead to a more specific dermatosis as atopic dermatitis or psoriasis. Therefore a conservative and mild treatment should be considered in all cases.