Efflorescence of new warts: a sign of onset of involution in flat warts

Abstract
The sudden eruption of large numbers of tiny new warts in a patient with multiple flat warts often signals the onset of involution and subsequent regression of all flat warts. Such cases (5) were observed and 2 cases were described in which the sudden efflorescence of many new warts was used as a sign to predict accurately the onset of involution and subsequent regression of all flat warts. Correlation of the histopathological and clinical findings provided an explanation for this phenomenon.

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