Linear IgA Bullous Dermatosis Associated With Dermatomyositis

Abstract

<h3>To the Editor.—</h3> Linear IgA bullous dermatosis is a vesiculobullous eruption characterized by linear deposits of IgA along the basement membrane zone that are seen by using direct immunofluorescence methods.¹We report an unusual case of linear IgA bullous dermatosis with dermatomyositis developing soon thereafter. <h3>Report of a Case.—</h3> In January 1990, an erythematous scaly eruption on the trunk and extensor surfaces developed in a 56-year-old white woman. Four months later, bullae developed on her lower extremities, whereupon she was referred to the dermatology service. Findings from her physical examination revealed a patchy erythematous scaly eruption on her face, trunk, and extensor surfaces and several 4- to 5-mm tense bullae on her lower extremities. Laboratory studies showed the following normal or negative findings: complete blood cell count with platelets, chemistry profile, urinalysis, erythrocyte sedimentation rate, creatinine phosphokinase, total complement level, antinuclear antibody, and rheumatoid factor. The biopsy specimen of a bullous lesion revealed a subepidermal blister