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idiopathic thrombocytopenic purpura
thrombocytopenic purpura not directly associated with any definable systemic disease, although it often follows a systemic infection. The cause is
thought to be a member of the immunoglobulin G class that acts as an antibody against platelets, causing ecchymoses, petechiae, and other bleeding. The acute form has a sudden onset, is more common in children, and usually resolves spontaneously within a few months. The chronic form has a slower onset, is more common in adults, and may be recurrent.
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