reasons for petechiaethrombocytopenic purpura symptomspurpura fulminans symptomstreatment for purpura and petechiaeidiopathic purpura symptomsallergic purpura symptomspurpura itchingpetechiae are a symptom ofpurple petechiaesenile purpura symptomsmost common cause of petechiaebenign causes of petechiae