the exact cause of peyronie's disease is unknown. in people whose disease develops quickly lasts a short time and goes away without treatment the likely cause is trauma (hitting or bending) that causes bleeding inside the penis. however in some people peyronie's disease develops slowly and is severe enough to require surgical treatment. other possible causes of peyronie's disease include: vasculitis. this is an inflammation of blood or lymphatic vessels. this inflammation can lead to the formation of scar tissue. connective tissue disorders. according to the national institutes of health about 30% of men with peyronie's disease also develop disorders that affect the connective tissue in other parts of their bodies such as the hands and feet. these conditions generally cause a thickening or hardening of the connective tissue. connective tissue is specialized tissue -- such as cartilage bone and skin -- that acts to support other body tissues. heredity. some studies suggest that a man who has a relative with peyronie's disease is at greater risk for developing the disease himself.
what causes peyronie's disease?