By Mayo Clinic Staff

When you become sexually aroused, blood flows into sponge-like spaces inside your penis, expanding and stiffening it. A bent penis generally occurs when these spaces don't expand evenly. Most often, this is due to normal differences in penis anatomy, but sometimes scar tissue or another problem causes a bent penis and painful erections.

Possible underlying causes of a bent penis include:

  1. Normal differences in penis anatomy
  2. Autoimmune disorder
  3. Inherited fibrous tissue (collagen) abnormality
  4. Injury to the penis
  5. Peyronie's disease (a curved erection caused by one of a number of underlying conditions)

Causes shown here are commonly associated with this symptom. Work with your doctor or other health care professional for an accurate diagnosis.

May 30, 2014