ABSTRACT
PSORIASIS AND OTHER PAPULOSQUAMOUS DISEASES The papulosquamous disorders are characterized by the clinical appearance of scaling papules (e.g. lichen planus) and plaques (e.g. psoriasis, pityriasis rubra pilaris), in which, in contrast to the eczemas, the lesions are well-demarcated and not usually associated with crusting, excoriations, or weeping.
