Priapism symptoms vary depending on the type of priapism. The two main types of priapism are ischemic and nonischemic priapism.
An erection normally occurs in response to physical or psychological stimulation. This stimulation causes certain blood vessels and smooth muscles to relax and/or expand, increasing blood flow to spongy tissues in the penis. Consequently, the blood-filled penis becomes erect. After stimulation ends, the blood flows out and the penis returns to its nonrigid (flaccid) state.
Priapism occurs when some part of this system — the blood, blood vessels, smooth muscles or nerves — changes normal blood flow. Subsequently, the erection persists. While the underlying cause of priapism often can't be determined, several conditions are believed to play a role.
Ischemic priapism can cause serious complications. The blood trapped in the penis is deprived of oxygen. When an erection lasts for too long, this oxygen-poor blood can begin to damage or destroy tissues in the penis. As a result, untreated priapism can cause erectile dysfunction.
July 08, 2016
- Shah AP. Priapism. Merck Manual Professional Version. http://www.merckmanuals.com/professional/genitourinary-disorders/symptoms-of-genitourinary-disorders/priapism. Accessed May 10, 2016.
- Deveci S. Priapism. http://www.uptodate.com/home. Accessed May 10, 2016.
- Heidelbaugh JJ. Urology. In: Clinical Men's Health. http://www.clinicalkey.com. Accessed May 10, 2016.
- Wein AJ, et al., eds. Priapism. In: Campbell-Walsh Urology. 11th ed. Philadelphia, Pa.: Elsevier; 2016. http://www.clinicalkey.com. Accessed May 10, 2016.
- Ferri FF. Priapism. In: Ferri's Clinical Advisor 2016. Philadelphia, Pa.: Mosby Elsevier; 2016. http://www.clinicalkey.com. Accessed May 10, 2016.
- Salonia A, et al. European Association of Urology guidelines on priapism. European Urology. 2014;65:480.
- Stein DM, et al. Nationwide emergency department visits for priapism in the United States. The Journal of Sexual Medicine. 2013;10:2418.