What is priapism?

Priapism is one of the emergencies of urology. It is a prolonged erection, of such duration that reduction of bloodflow to the tissues of the penis can cause oxygen starvation and permanent injury. Most urologists consider four hours too long to maintain an erection without injury. It can be painful, but isn’t always. Priapus was a Greek mythological figure and you can read more about it at Wikipedia. It can be caused by medications (Trazodone, Cialis, Viagra, Levitra), sickle cell crisis, penile artery injury, overstimulation with erectile aids (Triple-mix, Caverject, MUSE), and other causes. If you think you have a priapism, find an emergency room for immediate evaluation.