Peyronie's disease

Peyronie's disease is a condition in which scar tissue — called a plaque — forms inside the sheath that surrounds the erectile tissue of the penis (the tunica albuginea). This plaque doesn't stretch the way healthy tissue does. So when the penis fills with blood during an erection, the scarred area holds back while the rest expands, and the penis bends towards the scarred side. The result is a curve, and sometimes narrowing, shortening, or an indentation, that wasn't there before.

It's worth being clear about what Peyronie's disease is not. A degree of curvature is normal and common in men who have never had any injury or disease — the penis is rarely perfectly straight, and mild curves present since puberty aren't Peyronie's disease. What distinguishes Peyronie's is change: a curve that is new, that is getting worse, or that appears alongside pain, a palpable lump, or narrowing. That distinction matters because it shapes whether monitoring is appropriate or whether treatment should start.

The exact cause isn't fully understood, but the leading explanation involves injury and abnormal healing. Repeated minor trauma to the penis during sex or other activity — often too subtle to be noticed or remembered at the time — is thought to trigger an abnormal healing response in some men. Instead of healing cleanly, the tissue forms a scar, and in some men that scar continues to build up rather than being remodelled away over time. Why this happens in some men and not others isn't fully clear, but genetics appears to play a real role. Men with a family history of Peyronie's disease, or who have a related connective tissue condition called Dupuytren's contracture — which causes thickening in the tissue of the palm — appear to be at meaningfully higher risk, a link discussed further in the FAQs below.

The condition usually moves through two recognisable phases. In the acute (active) phase, which guideline literature typically describes as lasting up to around a year, the curve is often still changing and pain during erection is common. In the chronic (stable) phase, the curve has usually settled into its final shape, and pain, where present, typically eases or resolves. This phase distinction is clinically important, because many treatment decisions — including whether surgery is appropriate — depend on the plaque and curve having stabilised first, rather than being made while the condition is still actively changing.

Reported rates of Peyronie's disease vary a great deal between studies and regions, partly because some rely on physician diagnosis and others on self-reported symptoms, and partly because there appear to be genuine differences in prevalence between populations. What's consistent across the literature is that this is not a rare or unusual condition, and that it can affect far more than the physical ability to have sex. Because it changes the appearance and function of the penis, often suddenly and without an obvious explanation, it's strongly associated with anxiety, distress, and — in a meaningful proportion of men — depression. It also frequently overlaps with erectile dysfunction, sometimes because the same vascular changes contribute to both, and sometimes because pain, curvature, or anxiety about performance make erections harder to sustain.

Diagnosis usually starts with a physical examination and a discussion of how and when the curvature developed. A doctor may ask you to bring in a photo of the erect penis taken at home, since curvature isn't visible when the penis is flaccid and this avoids relying on description alone.

The doctor will typically feel along the shaft for plaques and check whether the tissue is tender. A duplex ultrasound is often used to look at the plaque itself — including whether it has calcified, which can affect treatment choice — and to assess blood flow, since ED and Peyronie's disease frequently coexist. Questionnaires such as the Peyronie's Disease Questionnaire (PDQ) are sometimes used to track pain, curvature bother, and psychological impact over time. Most cases don't need further imaging beyond this.