What causes Peyronie's disease?
Although the exact cause of Peyronie's disease is unknown, some experts believe the scarring is caused by injury to the penis from accidents, sports, or vigorous sex. During sexual intercourse, the penis can be injured by being bent during penetration or by pressure from a partner's pubic bone.
Peyronie's disease is not caused by cancer and does not increase the risk of cancer. It is not caused by sexually transmitted infections (STIs).
