Verruciform xanthoma in a psoriatic patient under PUVA therapy.

A patient with psoriasis vulgaris developed verruciform xanthoma (VX) on the scrotum during psoralen photochemotherapy (PUVA). Although it is uncertain whether VX was induced by PUVA therapy, we report the first case of VX which appeared in a patient with psoriasis during PUVA therapy. We speculate that UV light may be one of the etiologic factors triggering VX in this case.