Direct immunofluorescence in the diagnosis of scleroderma syndromes

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Abstract
Immunofluorescent study of the skin of nine patients with mesenchymal, inflammatory scleroderma (mixed connective tissue disease) revealed immunoglobulin and complement deposition at the basement membrane or within blood vessel walls. The skin specimens of ten patients with systemic scleroderma were negative for immunofluorescence. It is proposed that basement membrane or vascular (or both) immunofluorescence is an excellent means of identifying the infrequent patient who has scleroderma and myositis or lupus erythematosus in whom a corticosteroid response may occur.