A Case of Vancomycin-Induced Linear IgA Bullous Dermatosis / 대한피부과학회지

ABSTRACT

Linear IgA bullous dermatosis(LAD) is a subepidermal blistering disease characterized by linear IgA deposits in the basement membrane zone when visualized on direct immunofluorescence microscopy. Intravenous vancomycin has been the drug most implicated, and this disease has been termed vancomycin-induced LAD. Vancomycin-induced LAD tends to spontaneously resolve upon discontinuation of the offending drug. A 70-year-old male patient developed septic knee. Bacterial cultures from this lesion grew methicillin- resistant Staphylococcus aureus. He was treated with vancomycin. Eight days after vancomycin injection, painful bullae appeared on the trunk, feet, and genitalia. A skin biopsy showed a subepidermal blister with an infiltrate composed of neutrophils and eosinophils. Direct immunofluorescence of perilesional skin showed linear IgA deposition at dermo-epidermal junction. The vancomycin was stopped; teicoplanin was substituted. He was treated with dapsone. The use of vancomycin is increasing in Korea and therefore it is important for dermatologist to be aware of the association with LAD.