Pelvic pain has dozens of possible causes, ranging from muscle spasms and nerve compression to infections, organ-specific conditions, and reproductive disorders. The cause depends partly on your anatomy, how long the pain has lasted, and whether it’s tied to specific activities like urination, sex, or your menstrual cycle. Pain lasting more than three months is generally considered chronic, while acute pelvic pain develops over minutes to days and sometimes signals an emergency.
Understanding the major categories of pelvic pain can help you recognize patterns in your own symptoms and have a more productive conversation with a healthcare provider.
Endometriosis
Endometriosis is one of the most common causes of chronic pelvic pain in women. It occurs when tissue similar to the uterine lining grows outside the uterus, in places like the ovaries, fallopian tubes, or the tissue lining the pelvis. This tissue responds to hormonal shifts during the menstrual cycle just like the uterine lining does: it thickens, breaks down, and bleeds. But because it has no way to leave the body, it irritates surrounding tissue and triggers the formation of scar tissue and adhesions, which are bands of fibrous tissue that cause pelvic organs to stick together.
The hallmark symptom is pelvic pain linked to menstrual periods, often starting before a period and lasting several days into it. But endometriosis pain isn’t limited to periods. Pain during or after sex is common, as is pain with bowel movements or urination, particularly around menstruation. Many people also experience heavy periods, fatigue, bloating, nausea, and digestive issues. When endometriosis involves the ovaries, fluid-filled cysts called endometriomas can form, adding another source of pressure and discomfort.
Pelvic Inflammatory Disease
Pelvic inflammatory disease (PID) is an infection of the reproductive organs, most often caused by sexually transmitted bacteria, particularly gonorrhea and chlamydia. Other bacteria normally found in the vagina can also be involved. The infection typically starts in the cervix and spreads upward to the uterus, fallopian tubes, or ovaries.
PID causes lower abdominal or pelvic pain along with tenderness in the uterus or surrounding areas. You may also notice abnormal discharge, fever above 101°F, or pain during sex. PID can range from mild to severe, and some cases produce surprisingly subtle symptoms, which is part of what makes it dangerous. Left untreated, it can lead to scarring of the fallopian tubes and long-term fertility problems. Because early treatment matters, providers often start treatment based on clinical suspicion rather than waiting for lab confirmation.
Bladder Pain Syndrome
Interstitial cystitis, also called bladder pain syndrome, causes chronic pain, pressure, or discomfort that feels related to the bladder. Symptoms must persist for at least six weeks, with no infection or other identifiable cause, before this diagnosis is considered. The defining feature is pain that worsens as the bladder fills and improves after urination.
The pain isn’t always confined to the bladder area. It often radiates throughout the pelvis, including the urethra, vulva, vagina, rectum, lower abdomen, and back. Certain foods and drinks can make it worse. Many people describe the sensation as “pressure” rather than pain, and some experience a constant, urgent need to urinate. Bladder pain syndrome affects both men and women, though it’s diagnosed more frequently in women. Diagnosis is primarily based on symptoms and ruling out other conditions. Cystoscopy (a camera exam of the bladder) isn’t always necessary but may be used when the diagnosis is uncertain.
Pelvic Floor Muscle Dysfunction
The pelvic floor is a group of muscles that stretches across the bottom of the pelvis, supporting the bladder, bowel, and reproductive organs. When these muscles go into spasm or stay in a state of constant contraction, the result is a condition called hypertonic pelvic floor. This can cause widespread pelvic pain, low back pain, hip pain, or pain localized to specific areas like the bladder.
Pain often worsens during certain activities, particularly bowel movements, urination, or sex. People who habitually hold in urine or stool, sometimes a pattern that starts in childhood, are at higher risk. Injury or trauma to the pelvic muscles from surgery, pregnancy, childbirth, or accidents can also trigger it. Because the symptoms overlap heavily with bladder conditions, reproductive disorders, and other causes of pelvic pain, pelvic floor dysfunction is frequently overlooked or misdiagnosed. It can exist alongside other pelvic conditions, compounding the overall pain.
Pudendal Nerve Compression
The pudendal nerve runs from the back of the pelvis to the muscles and skin of the genital area, including the anus, vagina or penis, and the perineum. When this nerve is compressed or irritated, it causes burning, stabbing, or aching pain in the areas it serves.
Certain activities place repeated strain on this nerve. Cycling, horseback riding, heavy squatting exercises, and prolonged sitting are common culprits. Chronic constipation can also contribute through ongoing pressure in the pelvic region. Surrounding muscles and ligaments that become tight or inflamed can compress the nerve as well. The pain typically worsens with sitting and improves when standing or lying down, which is one of the distinguishing features. Pudendal neuralgia is often confused with bladder pain syndrome or pelvic floor dysfunction because the symptom overlap is significant.
Pelvic Pain in Men
Pelvic pain in men is more common than many people realize. The leading cause is chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS), defined as pain or discomfort in the pelvic region lasting at least three months with no identifiable infection or structural cause. Pain can show up in the perineum (the area between the scrotum and anus), lower abdomen, testicles, or penis. Some men experience pain during ejaculation or urination.
CP/CPPS is a diagnosis of exclusion, meaning providers need to rule out urinary tract infections, urethral narrowing, neurological conditions, and cancer before arriving at it. A physical exam typically includes pelvic floor muscle assessment, since muscle tenderness is a common finding. Men can also develop bladder pain syndrome with the same symptoms described above, and chronic scrotal pain, defined as persistent one-sided scrotal pain lasting more than three months that interferes with daily life.
Other Common Causes
Several other conditions frequently cause pelvic pain:
- Ovarian cysts: Fluid-filled sacs on the ovaries that usually resolve on their own but can cause sharp or dull pain, especially if they rupture or twist the ovary.
- Uterine fibroids: Noncancerous growths in the uterus that can cause pressure, heaviness, and pain in the pelvis, particularly during periods.
- Irritable bowel syndrome: Cramping and pain in the lower abdomen that overlaps with the pelvic region, often fluctuating with bowel habits.
- Appendicitis: Acute pain that typically starts near the navel and shifts to the lower right abdomen. This is a surgical emergency.
Many people with chronic pelvic pain have more than one contributing condition. Endometriosis and pelvic floor dysfunction, for example, commonly coexist, with one aggravating the other.
When Pelvic Pain Is an Emergency
Most pelvic pain is not life-threatening, but certain combinations of symptoms require immediate medical attention. An ectopic pregnancy, where a fertilized egg implants outside the uterus (usually in a fallopian tube), can cause the tube to rupture and lead to severe internal bleeding. Warning signs include severe pelvic or abdominal pain accompanied by vaginal bleeding, extreme lightheadedness, fainting, or shoulder pain. Shoulder pain occurs because blood from the rupture irritates the diaphragm, which shares nerve pathways with the shoulder.
Ovarian torsion, where an ovary twists on its blood supply, causes sudden and intense one-sided pelvic pain, often with nausea and vomiting. Appendicitis produces escalating pain in the lower right abdomen. All three of these conditions require emergency treatment.
How Pelvic Pain Is Evaluated
Because so many conditions can cause pelvic pain, diagnosis starts with a detailed history: where the pain is, when it started, what makes it better or worse, and whether it’s tied to your menstrual cycle, urination, bowel movements, or sexual activity. A physical exam and basic lab work, including urine tests to rule out infection, typically come next.
Ultrasound is the standard first imaging test for pelvic pain, especially when it localizes to the female pelvis. It’s noninvasive and effective at identifying structural problems like cysts, fibroids, and fluid collections. If ultrasound doesn’t explain the pain or if more detail is needed, MRI is generally the next step because of its superior ability to distinguish between soft tissues. CT scans are more commonly used in acute situations where conditions like appendicitis or a ruptured cyst are suspected. Advanced imaging is typically reserved for cases where the history, physical exam, lab results, and initial ultrasound haven’t provided a clear answer.