• Twenty-six outpatients with chronic plaque-type psoriasis vulgaris were treated five times weekly with topically applied white petrolatum and subsequent exposure to erythemogenic doses of ultraviolet radiation from fluorescent bulbs with a wavelength of 280 to 400 nm. All patients were cleared of psoriasis in ultraviolet-exposed sites in an average of 27 treatments. The combination of topically applied white petrolatum and ultraviolet radiation provides a convenient, cosmetically acceptable outpatient therapy for psoriasis.
(Arch Dermatol 116:552-554, 1980)
LeVine MJ, Parrish JA. Outpatient Phototherapy of Psoriasis. Arch Dermatol. 1980;116(5):552-554. doi:10.1001/archderm.1980.01640290062012