Peyronie’s disease rarely goes away on its own. Only about 12% of cases resolve spontaneously, while the majority either stay the same or get worse over time. That said, one key symptom, pain, does reliably improve. Understanding what changes and what doesn’t can help you set realistic expectations and make better decisions about treatment.
What Happens During the Two Phases
Peyronie’s disease progresses through two distinct stages: an acute (active) phase and a chronic (stable) phase. The acute phase begins at onset and lasts roughly 6 to 18 months. During this time, scar tissue is actively forming inside the tough outer layer of the penis. Cells in that tissue layer overproduce collagen, building up a firm plaque that causes the penis to curve, shorten, or develop an hourglass shape. Pain is the hallmark of this stage and can occur whether the penis is erect or flaccid.
The chronic phase typically begins around 12 to 18 months after symptoms first appear. Pain fades, and the curvature stabilizes. In one study tracking men over an average of 18 months, 89% were pain-free by their last follow-up. The curvature itself, however, usually does not reverse. Once the plaque hardens and sometimes calcifies, the body has very little ability to reabsorb it. This is why the overall spontaneous resolution rate sits at only about 12%.
Why Pain Improves but Curvature Stays
Pain and curvature are driven by different processes. Pain comes from active inflammation as new scar tissue forms and stretches surrounding tissue. Once that inflammation settles, the pain goes with it. Curvature, on the other hand, is a structural problem. The collagen plaque physically prevents one side of the penis from expanding normally during an erection, creating a bend. As the plaque matures, it can become firmer, even calcified. Ultrasound imaging can detect these calcifications with 100% sensitivity, and their presence generally signals that the disease has stabilized rather than that it’s healing.
Disease stabilization is defined clinically as at least three months with no change in curvature and resolution of pain. Stabilization is not the same as resolution. It means the condition has stopped progressing, not that the plaque is gone.
How Erectile Function Can Be Affected
Peyronie’s disease can affect erections beyond just the curvature itself. In a large nationwide analysis covering 13 years of data, about 15% of men developed new erectile difficulties within one year of their diagnosis. The risk was higher in men who were older, had diabetes, smoked, or had obesity. This can happen because the plaque disrupts blood flow within the penis or because the psychological burden of the condition affects arousal and confidence.
Non-Surgical Treatment Options
During the active phase, the goal of treatment is to limit further plaque formation and manage pain. Several non-surgical approaches exist for the chronic phase as well, aimed at reducing curvature once the disease has stabilized.
Injection therapy is the most studied non-surgical option. A series of injections delivered directly into the plaque can break down collagen and reduce curvature. In clinical trials, men who responded to this treatment saw an average curvature reduction of about 17 degrees, roughly a 34% improvement. A more recent real-world study found even larger gains, with responders averaging a 22-degree reduction (41% improvement). Treatment typically involves up to eight injections spread across four treatment cycles.
Penile traction devices work by applying a gentle, sustained stretch over weeks to months. To see results, you need to wear the device for a minimum of four to six hours per day for three to six months. Studies report modest length gains, typically under a centimeter, and some degree of curvature improvement. This approach requires significant commitment and works best in highly motivated patients. Some clinicians recommend traction alongside injection therapy for a combined effect.
Shockwave therapy has been studied primarily for pain rather than curvature. Trials show it can accelerate pain resolution compared to placebo, but it does not appear to meaningfully change the shape or size of the plaque.
When Surgery Becomes an Option
Surgery is reserved for men with stable disease, typically meaning symptoms have been present for at least 12 months and curvature hasn’t changed in three to six months. Two main surgical approaches exist.
Shortening (plication) procedures work by tucking the longer side of the penis to match the shorter, scarred side. This straightens the penis but reduces overall length somewhat. Initial success rates are around 90%, though after three years that number settles closer to 82%. The recurrence rate is about 17%.
Grafting procedures remove or cut into the plaque and patch the area with tissue. This approach achieves greater curvature correction, especially for more severe bends, and aims to preserve length. Initial success is around 88%, dropping to about 84% at long-term follow-up. Recurrence rates are similar to plication at about 16%. However, grafting carries a higher risk of new erectile difficulties. One large analysis found that grafting roughly doubled the odds of developing erectile problems compared to baseline.
Combined functional and anatomical success, meaning the penis is both straight and working well, lands at about 79% for shortening procedures and 75% for grafting at long-term follow-up.
Tracking Whether the Disease Is Changing
Ultrasound is the standard tool for monitoring Peyronie’s disease over time. It can measure plaque size in three dimensions, pinpoint the plaque’s exact location, and detect calcification. Because some lesions do stabilize quickly or partially regress, periodic imaging gives you and your doctor a clear picture of whether the disease is progressing, stable, or (in rare cases) improving. This information directly shapes treatment decisions, particularly the timing of any surgical intervention.
If you’ve been recently diagnosed, the practical takeaway is this: your pain will very likely improve on its own within 12 to 18 months. The curvature, in most cases, will not. Early treatment during the active phase may limit how much curvature develops, and effective options exist for the chronic phase if the bend is significant enough to affect function or quality of life.