Ukubekwa phambili kwesimo yisimo lapho ipipi lihlala limile khona amahora uma kungekho ukushukuma noma ngemuva kokuphela kokuvuselela. Kunezinhlobo ezintathu: ischemic (low-flow), nonischemic (high-flow), kanye ne-ischemic ephindaphindwayo (ngezikhathi ezithile). Izimo eziningi ziyi-ischemic. I-Ischemic priapism ivame ukuba buhlungu ngenkathi ukungahloniphi okungeyona imischemic kungenjalo. Ku-ischemic priapism, iningi lomthondo linzima; noma kunjalo, i- glans penis ayiyona. Ngokwe-priapism engeyona eyamakhemikhali, wonke umthondo unzima ngandlela thile. Kuyaqabukela kakhulu, ukuthambekela kokuhlangana kwenzeka kwabesifazane. Isifo se-Sickle cell yisona sizathu esivame kakhulu se-ischemic priapism. Ezinye izimbangela zibandakanya imishanguzo efana ne- antipsychotic, i- SSRIs, i- blood thinner ne- prostaglandin E1, kanye nezidakamizwa ezifana ne- cocaine ne- cannabis . I-Ischemic priapism yenzeka lapho igazi lingakhiphi ngokwanele kusuka endodeni. I-nonischemic priapism imvamisa ingenxa yokuxhuma okwenzeka phakathi komthambo kanye ne- corpus cavernosum noma ukuphazamiseka kohlelo lwezinzwa lwe-parasympathetic okuholela ekwandeni kokugeleza kwemithambo. I-nonischemic priapism ingenzeka kulandela ukuhlukumezeka kwepipi noma ukulimala komgogodla . Ukuxilongwa kungasekelwa ngokuhlaziywa kwegesi egazini kwegazi elivela kupipi noma i- ultrasound . Ukwelashwa kuya ngohlobo. I-Ischemic priapism ivame ukwelashwa nge- block block yomthondo elandelwa ukufisa kwegazi okuvela ku- corpora cavernosa .