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What Is Peyronie Disease?

Cross section of normal penis. Cross section of curved penis with Peyronie disease.

A slight natural curve to the erect penis is usually normal. But curvature that causes pain and difficulty with intercourse is a problem. The development of painful curvature is called Peyronie disease. Peyronie disease is due to scar tissue (plaque) that forms inside the penis.

Your penile anatomy

The shaft (body) of the penis consists of the corpora cavernosa, 2 columns of spongy tissue. During an erection, this tissue fills with blood, swells, and becomes rigid, creating an erection. A dense sheath of elastic tissue called the tunica surrounds the corpora. This tissue stretches as the penis becomes erect.

Painful curvature

Peyronie disease occurs when a plaque (scar) develops on the fibrous sheath of tissue surrounding the corpora. The scar can form on any part of the penis, but often is found on the top or bottom. The scarred area of the tunica loses its elasticity, so it doesn’t stretch when the corpora swells. Because the tunica doesn’t stretch in that area, the erect penis curves in the direction of the scar.

Possible causes

No one is sure just what causes the plaque. It may be the result of an injury to the erect penis or a blow to the groin. The plaque may occur because of a problem with your immune system. One thing is certain, however, that Peyronie disease is not caused by sexually transmitted diseases and is not cancer.

Symptoms of Peyronie disease

  • Curvature of the penis during erection (which may interfere with intercourse)

  • Pain during erection

  • Soft erections

  • Shortening or narrowing of the penis

A hard area usually felt below the skin of the penis in the area of the plaque.

Online Medical Reviewer: Donna Freeborn PhD CNM FNP
Online Medical Reviewer: Marc Greenstein MD
Online Medical Reviewer: Raymond Kent Turley BSN MSN RN
Date Last Reviewed: 7/1/2019
© 2000-2020 The StayWell Company, LLC. 800 Township Line Road, Yardley, PA 19067. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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