• Vesicles and bullae developed in six patients with psoriasis while they were undergoing therapy for their psoriasis. Skin biopsy specimens were taken from their lesions and studied for regular histopathologic findings and direct immunofluorescence. These studies confirmed that they had coexistent psoriasis and bullous pemphigoid. A review of the therapy that the patients were given incriminates anthralin, crude coal tar, ultraviolet light, and salicylic acid in the possible cause of the development of their bullous pemphigoid lesions.
(Arch Dermatol 114:1643-1646, 1978).
Koerber WA, Price NM, Watson W. Coexistent Psoriasis and Bullous PemphigoidA Report of Six Cases. Arch Dermatol. 1978;114(11):1643-1646. doi:10.1001/archderm.1978.01640230017005