Cicatricial pemphigoid in a patient with systemic lupus erythematosus.

Three years after the onset of lupus erythematosus, blisters, erosions, and erythema of the gingivae developed in a 31-year-old man. A diagnosis of cicatricial pemphigoid was established by routine and immunofluorescence microscopy studies. An association between cictricial pemphigoid and other autoimmune disorders seems to be rare. This case demonstrates the importance of performing immunofluorescence microscopy studies, as well as routine histologic assessments, of conditions that resemble desquamative gingivitis.