Priapism is a prolonged erection that is usually painful not a result of sexual stimulation. Priapism is caused by blood that is trapped in the penis and cannot drain. Follow the links below to find WebMD's comprehensive coverage about how priapism is caused, what it looks like, how to treat it, and much more.
Peyronie's disease is a condition in which scar tissue in the penis causes the penis to bend. Here are its causes, symptoms, and treatment.
Erectile Dysfunction and Priapism
WebMD looks at the causes and treatments of priapism -- a persistent and usually painful long-lasting erection - and its link to erectile dysfunction.
How the Penis Works
Learn the parts of a penis, how you get an erection, and how ejaculation happens.
Erectile Dysfunction and Stress
Stress often plays a role in erectile dysfunction. WebMD tells you how to cope.
Talking Together About Erectile Dysfunction
Learn how you and your partner can talk together about erectile dysfunction (ED) and work together to tackle the problem.
8 Things You Didn't Know About Your Penis
Medical experts reveal interesting facts about the penis that men and women will find educational -- and surprising.
Slideshows & Images
Manly Myths Quiz: The Truth About Men’s Health
Think you know the difference between myth and reality when it comes to men’s health issues? Take this quiz and find out.
Quiz: Is My Penis Normal?
Wondering about your penis size and shape? How much is too much masturbation? Take this WebMD quiz to see how savvy you are about your penis.