Psoriasis of the genitalia occurs in all age groups from infancy to the elderly. Approximately one-quarter to one-half of various epidemiologic studies report that genital psoriasis occurs with a higher frequency in males than in females. Therapeutic modalities for management of psoriasis in this site underscore the need for caution in not irritating the sensitive genital skin. Preventive measures include avoiding tight under- and outer-garments that provoke penile or vulvar psoriasis as well as maintaining cleanliness of the genital area.