"Nonthrombocytopenic purpura" yana nufin rukuni na yanayin kiwon lafiya da ke haifar da purpura, wanda nau'in kurjin fata ne wanda ke da ƙananan ja ko ja ko shuɗi wanda ke haifar da zubar jini a ƙarƙashin fata. Kalmar "nonthrombocytopenic" yana nuna cewa yanayin ba ya haifar da ƙananan adadin platelet ba, wanda shine sanadi na yau da kullum na purpura. Madadin haka, zubar da jini a cikin purpura marasa thrombocytopenic yawanci ana haifar da shi ta hanyar rashin daidaituwa a cikin tasoshin jini, kamar kumburi ko lalata bangon jirgin ruwa. Wannan na iya haifar da zubar jini a cikin kyallen da ke kewaye da shi, wanda zai haifar da samuwar purpura.