Linear IgA bullous dermatosis (LABD) is a rare acquired autoimmune chronic vesiculobullous dermatosis affecting primarily young children and older adults. We report a 17-year-old Chinese boy with a 2-month history of intense itching erythema or tense vesicles on healthy skin or on an erythematous base, with parts of lesions arising a characteristic "cluster of jewels" pattern. With the characteristics of vesicles or blisters on the skin, subepidermal blisters with neutrophilic infiltrate on histology, and linear IgA deposits on the basement membrane zone and absence of other immunoglobulins on direct immunofluorescence, LABD was dignosized. Sulfapyridine has also been reported as one of the best options of systemic therapy for LABD. Our patient successfully treated with only oral sulfasalazine (alternative medicine of sulfasalazine), which is safe and effective.
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