Pelvic pain has dozens of possible causes, ranging from muscle tension and digestive issues to infections and reproductive conditions. Chronic pelvic pain, defined as pain lasting longer than six months, affects roughly one in four women worldwide, and men develop their own version through conditions like chronic pelvic pain syndrome. The cause isn’t always obvious, and sometimes more than one issue contributes at the same time. Understanding the most common reasons can help you figure out what’s going on and what kind of help to seek.
Reproductive Causes in Women
Endometriosis is one of the most common sources of pelvic pain in women, affecting about 10% of women of reproductive age, or roughly 190 million people globally. In this condition, tissue similar to the uterine lining grows outside the uterus, triggering inflammation and scar tissue. The pain often worsens around menstruation but can become constant over time. Left untreated, the chronic inflammation can sensitize the nervous system, meaning the brain starts amplifying pain signals even from mild stimuli. This is one reason early diagnosis matters: catching it sooner may slow this pain escalation.
Ovarian cysts are another frequent culprit. Most are harmless and resolve on their own within a few menstrual cycles, but larger cysts or those that rupture or twist (ovarian torsion) cause sharp, sudden pain that can be severe. Uterine fibroids, which are noncancerous growths in the wall of the uterus, can also produce a dull, heavy ache in the pelvis, particularly during periods or sex.
Pelvic Pain Causes in Men
The most common pelvic pain condition in men is chronic prostatitis, also called chronic pelvic pain syndrome. Despite the name, it usually involves no detectable infection. The pain tends to settle in the area between the scrotum and rectum, the lower abdomen, the groin, or the lower back. It often comes with urinary symptoms: frequent urination (especially at night), an urgent need to go, a weak or stop-and-start stream, or a burning sensation while urinating. Painful ejaculation is another hallmark. Symptoms tend to come and go over months or years, which makes it frustrating to diagnose and manage.
Infections That Cause Pelvic Pain
Pelvic inflammatory disease (PID) is a bacterial infection of the reproductive organs, most often triggered by sexually transmitted bacteria like chlamydia or gonorrhea. It typically causes lower abdominal or pelvic pain along with abnormal vaginal discharge, pain during sex, and sometimes fever above 101°F. PID is a serious condition because untreated infection can scar the fallopian tubes, leading to fertility problems or chronic pain that persists even after the bacteria are cleared.
Urinary tract infections can also produce pelvic pressure and pain, usually centered low in the abdomen or behind the pubic bone, along with burning during urination and a constant urge to go. These are far more straightforward to treat but can spread to the kidneys if ignored, turning a minor problem into something more severe.
Digestive and Urinary Overlap
The pelvis is a crowded space. Your bladder, intestines, and reproductive organs all share real estate and nerve pathways, which is why a gut problem can feel like a bladder problem and vice versa.
Irritable bowel syndrome (IBS) frequently causes lower abdominal and pelvic cramping tied to bowel habits, bloating, and alternating constipation and diarrhea. Interstitial cystitis, sometimes called painful bladder syndrome, produces persistent bladder pressure, pelvic pain, and an urgent need to urinate dozens of times a day. These two conditions overlap remarkably often. In one study, 43% of women with interstitial cystitis also met the criteria for IBS, compared to just 11% of women without bladder pain. Researchers believe both conditions may share a common mechanism: specialized immune cells interact with nerve cells in the pelvic region, generating inflammation and pain that feeds on itself. Chemical messengers involved in gut function, particularly serotonin, may also play a role in both conditions.
This overlap means that if you’ve been treated for one condition without relief, it’s worth considering whether the other is also contributing.
Pelvic Floor Muscle Tension
Your pelvic floor is a hammock of muscles stretching across the base of your pelvis, supporting your bladder, bowel, and reproductive organs. When these muscles go into a state of constant contraction, called hypertonic pelvic floor, they can’t relax properly. The result is a deep ache or pressure in the pelvis, lower back, or hips that may be constant or flare during specific activities like sitting, exercising, or having sex.
Several things can trigger this muscle tension. Habitually holding in urine or stool, sometimes a pattern that starts in childhood, trains the muscles to stay clenched. Injury during surgery, childbirth, or a traumatic accident can also set it off. Stress and anxiety are common contributors too, since people often unconsciously tighten pelvic muscles the same way they clench their jaw. This cause is frequently overlooked because it doesn’t show up on standard imaging, but pelvic floor physical therapy is an effective treatment for many people.
Vascular and Nerve-Related Causes
Pelvic congestion syndrome occurs when veins in the pelvis become enlarged and blood pools rather than flowing back toward the heart, similar to varicose veins in the legs. The pain is typically a dull ache that worsens after long periods of standing and may flare during or after sex. Diagnosing it is tricky: imaging often reveals dilated veins in people who have no pain at all, so this diagnosis is generally reached only after other causes have been ruled out. Treatment isn’t necessary unless you’re experiencing chronic pain.
Pudendal neuralgia is a less common but intensely painful condition where the pudendal nerve, which runs through the pelvic floor muscles to the external genitalia, gets compressed or irritated. It produces chronic stabbing or burning pain in the area between the genitals and rectum, and it can become disabling. Sitting often makes it worse, while standing or lying down may offer some relief.
How Pelvic Pain Gets Diagnosed
Because so many conditions produce similar symptoms, diagnosis usually starts with a detailed conversation about where exactly you feel the pain, when it started, what makes it worse, and whether it correlates with your menstrual cycle, bowel habits, urination, or sexual activity. A physical exam typically follows, including a pelvic exam that checks for tenderness in specific areas to help narrow down the source.
Ultrasound is the most common first imaging step. A transvaginal ultrasound is accurate for identifying ovarian cysts, fibroids, and endometriomas (cysts caused by endometriosis). A transabdominal ultrasound can pick up bladder or urinary tract involvement. If ultrasound results are inconclusive, an MRI is the usual next step. MRI is particularly good at mapping deep endometriosis, identifying bowel involvement, and distinguishing between conditions that look similar on ultrasound, like fibroids versus inflammatory disorders. In some cases, a minimally invasive surgical procedure called laparoscopy is needed to get a definitive answer, especially for endometriosis that doesn’t show on imaging.
Expect this process to take time. Chronic pelvic pain often involves more than one contributing factor, and a single test rarely gives the full picture.
When Pelvic Pain Is an Emergency
Most pelvic pain develops gradually and isn’t dangerous, but certain combinations of symptoms need immediate attention. Sharp, sudden pelvic pain paired with heavy vaginal bleeding, fever, nausea or vomiting, or signs of shock like fainting or lightheadedness warrants a trip to the emergency room. These can signal a ruptured ovarian cyst, ovarian torsion, ectopic pregnancy, or a severe infection, all of which can become life-threatening without prompt treatment.