Abstract
Juvenile dermatomyositis (JDM) is a rare autoimmune disease characterized by chronic inflammation of the skin and muscle vasculature. Loss of nailfold capillary end row loops (ERL) is associated with disease activity. We now present the first report of serious gastrointestinal (GI) events in two JDM patients, both preceded by a precipitous drop in their ERL, which contributes to the consideration of JDM as a member of the vasculitis group of myopathies. These cases demonstrate that the sudden and significant loss of ERL density appears to be a novel and reliable indicator of severe systemic microangiopathy, including gastrointestinal vasculopathy, in selected children with JDM.
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