Focal vitiligo.

Abstract

In the child all forms of adult vitiligo can be seen, from the systemic - which comprises the acro-facial and vulgaris forms, the latter being more or less rapidly progressive up to the universal form - to a localized one, that has a better prognosis and includes the perinevic, segmental and focal form. The boundaries between the different variants of vitiligo are not clear as evidenced by the association between two or three variants (mixed forms) and the possible evolution in systemic vitiligo of an initially localized form. Focal vitiligo -14.4% of infantile forms (2) - is characterized by few lesions present in a median area - in children the ano-genital form is frequent - or asymmetrically on both sides in areas that are not those typical of systemic vitiligo. The focal form often persists unchanged over time (1).