Can Constipation Cause Testicular Pain?

Constipation can cause testicular pain, and the connection is more common than most people realize. The link was first documented in a clinical case series of boys whose scrotal pain completely resolved once the backed-up stool was cleared, suggesting direct nerve irritation from a distended bowel. Since then, research has uncovered several overlapping pathways that explain the relationship, from shared nerve wiring to chronically tense pelvic muscles to the mechanical consequences of straining. The answer is not as simple as “full colon presses on testicle,” though that mental model is not entirely wrong either.

Shared Nerves and Referred Pain

The testicles and the lower bowel share some of the same nerve highways. Sensory fibers from both regions travel through nerve roots in the lower spine and the sacral plexus, which means signals from one area can be misinterpreted by the brain as coming from the other. This phenomenon, called referred pain, is why a kidney stone can make your testicle ache and why a heart attack can radiate down your left arm. A large mass of stool sitting in the rectum or sigmoid colon can irritate or compress nearby nerves, sending pain signals that register in the scrotum even though nothing is structurally wrong with the testicle itself.

The clearest evidence comes from a case series at a children’s hospital that identified six boys presenting with scrotal pain who turned out to have significant constipation. None of them had any structural or infectious problem with their testicles. Once the fecal mass was evacuated, every one of them experienced relief of their testicular symptoms. The researchers proposed two possible explanations: direct stimulation of nerves running near the distended bowel, or chronic low-grade inflammation of testicular structures caused by dysfunctional voiding patterns that accompany constipation.¹

This is worth knowing because referred pain is invisible on imaging. An ultrasound of the scrotum looks normal, urine tests come back clean, and the physical exam is unremarkable. That combination can leave both patient and doctor searching for an explanation, and constipation is not always the first thing anyone thinks to ask about. If you have unexplained testicular discomfort and your bowel habits have been off, the two are worth connecting.

Pelvic Floor Muscles as the Missing Link

The pelvic floor is a hammock of muscles stretching from your pubic bone to your tailbone. These muscles support the bladder and bowel, help control urination and defecation, and play a role in sexual function. When they become chronically tense or dysfunctional, they can produce pain in a surprising range of locations, including the testicles. And constipation is one of the most reliable triggers and companions of that dysfunction.

A study examining men with chronic testicular pain found that 93% had at least one symptom pointing to pelvic floor dysfunction. Almost half reported problems across all three domains the researchers tracked: urination, defecation, and sexual function. When the researchers measured pelvic floor muscle activity directly, 88% of the men had abnormally high resting muscle tone, nearly double what is considered normal.² In other words, their pelvic floor muscles were stuck in a partially contracted state even at rest. That kind of chronic tension compresses nerves and restricts blood flow in the region, and the testicles sit right in the zone of impact.

More recent work has sharpened this picture. When researchers compared chronic testicular pain patients who had confirmed pelvic floor dysfunction against those whose pain had other causes, constipation stood out dramatically. Men with pelvic floor dysfunction were roughly 15 times more likely to report constipation than men whose testicular pain came from a different source.³ That association does not prove constipation caused the pain on its own; it suggests the two problems grow from the same root. A pelvic floor that does not relax properly makes it harder to pass stool and simultaneously irritates the nerves that serve the testicle.

This creates a frustrating cycle. Constipation leads to more straining, which further fatigues and tightens the pelvic floor muscles, which worsens the nerve irritation, which sustains the testicular pain. Breaking the cycle usually means addressing the muscle dysfunction itself, not just treating the constipation in isolation.

What Straining Does to the Inguinal Region

Separate from nerve pathways and muscle tension, the mechanical act of straining on the toilet has its own consequences in the groin. When you bear down hard to pass a difficult bowel movement, intra-abdominal pressure spikes. That force pushes outward against the abdominal wall, and the inguinal canal, the passage through which the spermatic cord travels from the abdomen to the scrotum, is one of the weakest points in that wall.

Repeated straining over months or years can contribute to the development or worsening of an inguinal hernia. This happens because the elevated pressure forces tissue through the weakened inguinal area.⁴ An inguinal hernia can produce a dull ache or dragging sensation in the scrotum, and many men describe it as testicular pain even though the testicle itself is fine. The hernia is essentially pushing intestinal tissue or fat down through the canal and into the scrotal area, creating pressure and discomfort that feels testicular in origin.

The same straining mechanism has been investigated for its role in varicocele, the abnormal enlargement of veins within the scrotum. A varicocele feels like a “bag of worms” around the testicle and often produces a heavy, aching sensation. Research has found that while chronic constipation is probably not a major standalone cause of varicocele, it may act as a facilitating factor, essentially making an existing susceptibility worse by repeatedly increasing venous pressure in the region.⁵ If you already have mildly dilated testicular veins, chronic straining could push them across the threshold into painful territory.

Chronic Pelvic Pain Syndrome and Overlapping Bowel Symptoms

For some men, testicular pain is one feature of a broader condition called chronic pelvic pain syndrome, sometimes labeled chronic prostatitis even when the prostate itself is not inflamed. This condition is notoriously difficult to pin down because it shows up as pain in the perineum, groin, lower abdomen, or testicles alongside problems with urination, bowel habits, and sexual function. Constipation is a frequent companion.

Men who have a chronic urological pain condition often have disturbances of urinary, bowel, and sexual function simultaneously.⁶ The reason is that the pelvis is a densely wired intersection of nerves, muscles, and organs. When one component goes haywire, the others tend to follow. A man might present to a urologist for testicular pain, a gastroenterologist for constipation, and a psychologist for the anxiety that chronic pain produces, all without any of those providers connecting the dots.

Pudendal nerve entrapment is one specific variant worth mentioning. The pudendal nerve runs through a narrow canal near the ischial spine and supplies sensation to the perineum, rectum, and genitals. When it becomes compressed or irritated, people typically experience progressive pain in the perineal or urogenital area that worsens with sitting. Constipation and painful bowel movements are common associated symptoms, alongside urinary hesitancy and sexual dysfunction.⁷ In this scenario, the nerve problem produces both the constipation and the testicular or perineal pain, rather than one directly causing the other.

How to Tell If Your Constipation Is the Culprit

The honest answer is that you often cannot tell on your own. But a few patterns make the connection more likely. If your testicular discomfort tends to worsen during periods of constipation and improve when your bowels are moving normally, that temporal relationship is meaningful. If the pain is more of a dull ache or heaviness rather than a sharp, sudden onset, that also fits the constipation-related pattern better. And if a physical exam and scrotal ultrasound have already ruled out the urgent structural causes like torsion, infection, and tumors, constipation and pelvic floor dysfunction move up the list of suspects.

Certain red flags always warrant prompt medical evaluation regardless of constipation status:

• Sudden severe pain: testicular torsion cuts off blood supply and requires surgery within hours to save the testicle.
• Swelling or a hard lump: testicular cancer is uncommon but treatable when caught early.
• Fever with scrotal pain: infection of the epididymis or testicle needs antibiotics.
• Pain after injury: trauma can cause rupture or hematoma that needs urgent assessment.

If none of those apply and your pain has been present for weeks or months with no clear structural cause, your provider should be asking about your bowel habits. Many do not ask unprompted, so it is worth volunteering the information. Mention how often you have a bowel movement, whether you strain, and whether you feel like you fully empty. Those details can shift the evaluation in a productive direction.

Treating the Pain by Treating the Gut

When constipation is contributing to testicular pain, managing the constipation is the first and most straightforward intervention. That means adequate fiber intake, sufficient water, regular physical activity, and if necessary, an osmotic laxative to get things moving. For the case series of boys described earlier, simply evacuating the backed-up stool resolved the scrotal pain entirely.¹ Not every case is that clean, especially in adults with long-standing issues, but addressing the constipation is always a reasonable starting point.

When pelvic floor dysfunction is the underlying driver, treatment typically involves pelvic floor physical therapy. This is not the Kegel-style strengthening that most people associate with pelvic floor exercises. In fact, strengthening is often the wrong direction for men with chronic testicular pain, because their pelvic floor is already too tight. The therapy focuses on relaxation, stretching, trigger point release, and retraining the muscles to contract and release properly. Biofeedback, where sensors show you your muscle activity in real time, can help people learn to let go of tension they did not know they were holding.

For men whose constipation is part of a broader chronic pelvic pain syndrome, the treatment approach tends to be multimodal. That might include a combination of pelvic floor therapy, behavioral modifications, stress management, and sometimes medications that calm overactive nerves. The key insight from the research is that the urinary, bowel, and sexual symptoms are usually not three separate problems requiring three separate treatments. They are different expressions of the same underlying dysfunction, and treating the dysfunction at its source tends to improve all of them.

Why This Connection Gets Missed

Medicine is organized by organ system. Urologists handle the testicle, gastroenterologists handle the bowel, and physiotherapists handle the muscles. A man with chronic testicular pain is unlikely to be asked about his defecation habits during a standard urology visit, and a man seeing his primary care doctor for constipation is unlikely to mention the dull ache in his scrotum because the two things seem unrelated. Even when both problems are disclosed, the provider may not connect them, because the constipation-testicular pain link is not widely taught outside of pelvic pain specialty circles.

The research itself is relatively sparse. The landmark case series describing scrotal pain from constipation in children noted that the association had not been previously reported in the medical literature.¹ That was published in 2001, and while the pelvic floor dysfunction literature has expanded substantially since then, the specific pathway from constipation to testicular pain still does not get the attention it probably deserves. The result is that some men undergo unnecessary procedures, repeated courses of antibiotics for infections that are not there, or even surgery on the spermatic cord before anyone thinks to ask whether they strain on the toilet every day.

Part of the problem is also embarrassment. Men are often reluctant to discuss bowel habits, and even more reluctant to discuss testicular symptoms in detail. Combining the two in a single conversation requires a level of comfort that many patients and some doctors do not have. If you are dealing with both issues, being direct about it can save you months of diagnostic wandering.

Constipation in Children and Testicular Pain

The connection shows up in pediatric populations with surprising regularity, though it remains underrecognized. Children are more likely than adults to present with vague abdominal or scrotal complaints that defy easy diagnosis, and constipation is extremely common in childhood. The case series mentioned throughout this article focused specifically on boys, and the pattern was consistent: no structural abnormality on exam, no infection, and complete resolution of pain once the constipation was addressed.

In children, the mechanism may be somewhat more straightforward than in adults. A child’s pelvis is smaller, so a significant fecal load creates proportionally more pressure on surrounding structures. The spermatic cord and its accompanying nerves run close to the sigmoid colon and rectum, and in a small body, there is less room for a distended bowel to expand without impinging on its neighbors. Parents who notice that their son is complaining of groin or testicular discomfort alongside infrequent or difficult bowel movements should mention the bowel issues to the pediatrician, even if the two symptoms seem unconnected. The fix can be remarkably simple once the relationship is recognized.

That said, testicular pain in a child still warrants prompt evaluation to rule out torsion, which is a true surgical emergency. The reassuring feature of constipation-related pain is that it tends to be bilateral or poorly localized, comes and goes rather than arriving suddenly, and is not accompanied by swelling or discoloration. Torsion, by contrast, typically strikes one side, comes on abruptly, and often causes nausea or vomiting. When in doubt, err on the side of getting seen quickly.