Why Does It Curve to the Left? A Guide to Penile Curvature and Peyronie’s Disease

Why Does It Curve to the Left? A Men's Health Guide to Penile Curvature and Peyronie's Disease

Looking at your penis and wondering “Why Does It Curve to the Left?”— you’re not alone, and you’re right to look into it. A penis that curves to the left is most often the result of Peyronie’s disease. It happens when scar tissue (called a plaque) forms inside the penis and pulls it to one side during erection. Though, some men have a congenital curve that has been present since birth.

Penile curvature is more common than most men realize, and in many cases, it has a clear, treatable cause. If you’re wondering whether your penile curve is normal, new, painful, or affecting sex, this guide can help. It explains the main causes of penile curvature and the differences between Peyronie’s disease and congenital curvature. It also covers treatment options, including pelvic floor physical therapy in New York City, and when to see a specialist. Peyronie’s disease affects an estimated 1 in 11 men, and understanding it early can help prevent avoidable pain, sexual dysfunction, and stress while improving comfort and function.

Not sure why does it curve to the left? Book a free 15-minute teleconsultation with Dr. Adam — no referral needed, no awkward waiting room.

What Causes a Leftward Penile Curve?

The most common cause of a penis that curves to the left is Peyronie’s disease. It’s a benign but often distressing condition in which fibrous scar tissue, called a plaque, forms beneath the skin of the penis. Although the exact cause is unknown, the disease can change the penis’s shape and function. Because the plaque doesn’t stretch like healthy tissue, it creates uneven tension during an erection and pulls the penis toward the affected side.

The direction of the curve — left, right, upward, or downward — depends entirely on where the plaque forms. A left-curving penis typically means the plaque is on the left side of the shaft, and while it is most common in men over 40, it can occur at any age.

Related Blog: Downward Penile Curvature: Causes, What’s Normal, and When to Seek Care

Two types of penile curvature: Peyronie’s disease and congenital penile curvature

TypeCauseOnsetPainful?
Peyronie’s diseaseExact cause unknown; scar tissue / plaque may follow micro-injury or inflammationCan happen at any age, but more common after 40Often yes, especially early stage
Congenital curvaturePresent since birth; no plaqueSince pubertyUsually no

What Does Peyronie’s Disease Actually Feel Like? Erectile dysfunction and other symptoms

Peyronie’s disease typically develops in two stages. In the acute phase (usually lasting 6–18 months), the plaque is forming. This is when men notice pain during erections, a new or worsening curve, and sometimes a palpable lump or hardness in the shaft. About half of men with Peyronie’s disease also report pain during intercourse. In the chronic phase, the plaque stabilizes, the curvature may stop changing, and pain often — though not always — decreases. The symptoms of Peyronie’s disease can occur suddenly or develop slowly. Roughly 10% to 20% of men with Peyronie’s also have scarring elsewhere, which may be linked to connective tissue disorders involving connective tissue.

At our clinic, men who come to us often describe feeling embarrassed or confused before they get a diagnosis, and penile curvature can have a real impact on mental health. Many assume the curve was always there, or that there’s nothing they can do. Both assumptions are usually wrong.

Therapy or support groups can help men cope with the psychological impact.

  • Symptoms of Peyronie’s disease include erections that curve noticeably left, right, up, or down
  • Pain during erection or intercourse
  • A hard lump or ridge under the skin of the shaft
  • Shortened penile length
  • Difficulty achieving or maintaining a firm erection
  • Narrowing or “hourglass” shape in the middle of the shaft

Why Does It Curve Upward Instead of to the Side?

A penis that curves upward is caused by the same mechanism. In Peyronie’s disease, plaque on the dorsal (top) surface of the shaft pulls the penis upward during an erection. Upward curvature is one of the more common presentations of the condition. It is often mistaken for a congenital curve, which can also cause an upward bend.

The key clinical distinction: if the curve appeared or worsened during adulthood and is associated with pain or a palpable lump, Peyronie’s disease is the far more likely explanation than a congenital curve. According to the American Urological Association (AUA), Peyronie’s disease affects approximately 9% of men. It is a figure widely believed to undercount the true prevalence due to underreporting.

Can Pelvic Floor Therapy Help Peyronie’s Disease?

Yes — and this is where most men are genuinely surprised. Pelvic floor physical therapy is an evidence-supported, non-surgical option for treating Peyronie’s disease. It addresses several of the condition’s most disruptive effects, and it is one of several treatment options.

Research published in the Journal of Sexual Medicine found that multimodal pelvic floor rehabilitation — combining manual therapy, targeted stretching, and neuromuscular re-education — helped men with Peyronie’s disease improve erectile function and reduce pain without surgical intervention. At Pelvis NYC, our pelvic PT approach for Peyronie’s includes:

  • Soft tissue mobilization — gentle manual techniques to reduce fascial tension around the plaque and improve tissue extensibility
  • Pelvic floor muscle retraining — many men with PD develop compensatory muscle guarding that worsens pain; we address this directly
  • Targeted stretching protocols — evidence-based Traction Therapy guidance aligned with AUA recommendations
  • Erectile function support — including breath work, nervous system regulation, and follow-up between sessions

Urologists may also use intralesional injections to treat Peyronie’s disease in the acute phase, while oral medications are generally not effective for correcting penile curvature.

Pelvic PT won’t dissolve the plaque, but it can meaningfully reduce pain, preserve length, improve sexual function, and prevent the pelvic floor compensations that make Peyronie’s harder to live with. Some other treatments and surgeries can also involve shortening of the penis, so understanding trade-offs matters.

When Should You See a Specialist?

If your penis curves to the left (or in any direction) and the curve is new, worsening, or accompanied by pain, see a specialist as soon as possible. A slight curve or slightly curved penis without pain or difficulty is often normal, but new changes should still be evaluated. Earlier intervention in the acute phase of Peyronie’s disease is associated with better outcomes. Don’t wait for the pain to go away on its own — for many men, it doesn’t, or it returns.

A pelvic floor physical therapist and a urologist work as a team in managing PD. Our role at Pelvis NYC is to address the physical and functional aspects — pain, mobility, pelvic floor tension, erectile function — while your urologist monitors the plaque and may recommend options such as Xiaflex injections or surgery, usually after symptoms have stabilized for 3–6 months.

How to Diagnose Peyronie’s Disease?

A health care professional may diagnose Peyronie’s disease by reviewing your medical history and family history, doing a physical exam, and sometimes using an ultrasound to assess plaque and blood flow in an erect penis. They should also ask about any injury to the penis, including trauma during sexual intercourse or vigorous sex, and review urinary problems when relevant.

For men who also have erectile dysfunction, a penile prosthesis or penile implants may be considered if other options are not a fit. Peyronie’s disease increases with age, and men with diabetes-associated erectile dysfunction have a 4 to 5 times higher chance of developing it. There is no known method for preventing Peyronie’s disease, so men should seek treatment when pain, curvature, or function problems begin.


Frequently asked questions

Is it normal for a penis to curve to the left?

A mild curve present since adolescence can be entirely normal — this is called a congenital curvature. However, if your penis has developed a new or worsening leftward curve as an adult, especially with pain or a hard lump, that is a key sign of Peyronie’s disease and warrants evaluation by a specialist.

Can Peyronie’s disease go away on its own?

In a small percentage of men, mild Peyronie’s disease may stabilize or improve without treatment — but this is the exception, not the rule. Most men experience a stable or worsening curve without intervention. Early treatment during the acute phase offers the best chance of limiting curvature and preserving function.

Do I need a referral to see a pelvic floor PT in NYC?

No referral is needed to book an appointment at Pelvis NYC. New York State allows direct access to physical therapy without a physician referral. You can also start with a free 15-minute teleconsultation to discuss your symptoms before committing to an in-person visit.

How long does pelvic floor therapy take for Peyronie’s disease?

Most men see meaningful improvement in pain and pelvic floor tension within 6–10 sessions. The total course of care varies depending on severity, phase of PD, and individual response. We reassess progress regularly and adjust the plan accordingly.

Does Pelvis NYC treat Peyronie’s disease in women?

Peyronie’s disease is specific to men, but Pelvis NYC treats a full range of pelvic floor conditions in women as well, including pelvic pain, sexual dysfunction, and post-partum recovery. Our same-gender care model means female patients are always seen by a female clinician.

Is pelvic floor therapy covered by insurance for Peyronie’s disease?

Pelvis NYC is an out-of-network provider. Many patients receive partial reimbursement through their out-of-network benefits. We provide detailed superbills after each session to support your insurance claim. Contact us, and we can help you understand your coverage before your first visit.

Penile curvature is treatable — and you don’t have to figure it out alone. Schedule your first appointment at Pelvis NYC or call us at (929) 590-3445. Our clinic serves men across New York City in a judgment-free, same-gender environment.

Dr. Adam Gvili, PT, DPT

Dr. Adam Gvili is the founder and lead clinician at Pelvis NYC, a men’s and women’s pelvic floor physical therapy clinic in New York City. He specializes in pelvic floor dysfunction, Peyronie’s disease, and sexual health rehabilitation, and has been featured in Bloomberg, Business Insider, and Experience Life magazine. He offers free teleconsultations for new patients.