Cudurka xinjirowga (thrombocytopenic purpura) wuxuu saameyn karaa da' kasta iyo dhammaan jinsiga. Da'yarta qaangaarka ah, waxay khusaysaa dumarka in ka badan ragga. Taa beddelkeeda, qiyaastii da'da 50, ragga ayaa aad u saameeya dumarka.

Rheumatoid purpura waxay khusaysaa carruurta iyo iyo dadka da'da yar, oo leh badi kiisas ilaa 5 sano jir ah. Wiilasha ayaa ka saameyn badnaan lahaa gabdhaha.