Peyronie's disease is penis problem caused by scar tissue, called plaque, that forms inside the penis. It can result in a bent, rather than straight, erect penis. Most men with Peyronie's disease can still have sex. But for some, it can be painful and cause erectile dysfunction. Depending on the symptoms, you may opt for observation, medical or surgical treatments.

What Causes Peyronie's Disease? Doctors don’t know exactly why Peyronie's disease happens. Many researchers believe the fibrous plaque can start after trauma (hitting or bending) that causes bleeding inside the penis. You might not notice the injury or trauma. Other cases, which develop over time, may be linked to genes. In some men, injury and genes could both be involved. Some medications list Peyronie's disease as a possible side effect. But there is no proof that these drugs cause the condition.

Who Gets Peyronie's Disease? Although it mostly happens in middle-aged men, younger and older men can get it. It becomes more common as a man gets older. But it’s not a normal part of aging.

What Are the Symptoms of Peyronie's Disease? Symptoms may develop slowly or appear overnight. When the penis is soft, you can’t see a problem. But in severe cases, the hardened plaque hampers flexibility, causing pain and forcing the penis to bend or arc when erect. In most cases, the pain eases over time, but the bend in the penis can worsen. Some men with the condition develop scar tissue elsewhere in the body, such as on the hand or foot. Men with Dupuytren's contractures -- scarring in the hand that affects fingers -- seem to be more likely to get Peyronie's.