Polymyositis, dermatomyositis, and necrotizing myopathy are diseases that are often treated with immunoglobulin (Ig) products, either intravenously (IV) or subcutaneously (SC). Many TMA members find IVIg or SCIg to be a very effective treatment. Recently, however, TMA has become aware of shortages of Ig products in some areas of the country. IVIg and SCIg are…
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