Short answer · Medically reviewed summary · Last updated: 2026-04-07
TL;DR: Peyronies disease is a connective tissue disorder characterized by the development of fibrous scar tissue, known as a plaque, inside the penis that causes curved, painful erections. While the exact cause is not fully understood, it is often associated with localized trauma or injury and can lead to significant physical discomfort and psychological distress. What is Peyronies disease and how does it affect the body? Peyronies disease is a condition involving the growth of noncancerous fibrous plaques in the tunica albuginea, the thick sheath of tissue surrounding the erectile chambers of the penis.
TL;DR: Peyronies disease is a connective tissue disorder characterized by the development of fibrous scar tissue, known as a plaque, inside the penis that causes curved, painful erections. While the exact cause is not fully understood, it is often associated with localized trauma or injury and can lead to significant physical discomfort and psychological distress.
Peyronies disease is a condition involving the growth of noncancerous fibrous plaques in the tunica albuginea, the thick sheath of tissue surrounding the erectile chambers of the penis. When this tissue loses its elasticity due to scarring, it cannot expand normally during an erection, resulting in a curvature or deformity. Beyond the physical bend, Peyronies disease frequently impacts the genitourinary system, often causing pain, erectile dysfunction, and anxiety regarding sexual performance or body image. It is important to recognize that Peyronies disease is not a sexually transmitted infection, nor is it a form of penile cancer.
While often underreported, studies suggest that Peyronies disease affects approximately 0.5% to 13% of men. It is most commonly diagnosed in men between the ages of 40 and 70, though it can occur in younger adults. There is no significant geographic clustering associated with the condition. At DiseaseMaps.org, we currently support a growing community of individuals who have shared their personal experiences with Peyronies disease, highlighting the importance of peer support in navigating this diagnosis.
The underlying mechanism of Peyronies disease involves an abnormal wound-healing process. Experts believe that the condition is triggered by micro-trauma or repetitive injury to the penis, which may occur during sexual activity. In susceptible individuals, this injury triggers an inflammatory response that results in the formation of collagen-rich scar tissue instead of healthy, elastic tissue. Key factors that differentiate Peyronies disease from other conditions include:
Clinicians generally divide the progression of Peyronies disease into two distinct phases to help guide management strategies:
Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.