Medical Definition of thrombocytopenic purpura
Note: Thrombocytopenic purpura is an autoimmune disorder in which components of the immune system destroy platelets and sometimes impair their production. It typically occurs in adults as a chronic condition lasting one or more years and in children as an acute condition that lasts a few weeks to several months and is usually preceded by a viral illness. While thrombocytopenic purpura may arise secondary to a preexisting condition (such as systemic lupus erythematosis or hepatitis C), it is generally idiopathic, arising spontaneously or having an obscure trigger.
— called also purpura hemorrhagica, Werlhof's disease— compare thrombotic thrombocytopenic purpura
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