A 38-year-old man with systemic lupus erythematosus had nodular cutaneous mucinosis, leukocytoclastic vasculitis, and a vesiculobullous eruption. Immunopathologic study of a bullous lesion revealed granular deposits of IgA and IgG along the basement membrane zone. Localization of immune deposits to the lamina and sublamina densa was confirmed by immunoelectron microscopy.