Pelvic pain stems from a range of conditions, and the eight most common causes include endometriosis, ovarian cysts, uterine fibroids, pelvic inflammatory disease, pelvic floor dysfunction, urinary tract infections, interstitial cystitis, and irritable bowel syndrome. Chronic pelvic pain, defined as at least six months of pain perceived to originate in the pelvis, affects up to 26 percent of individuals with female anatomy, according to NCBI StatPearls. That means roughly 1 in 7 women in the United States live with this kind of persistent discomfort, a number that carries real consequences: approximately 15 percent of affected females report missing paid work, and around 45 percent say their productivity has dropped because of it. What makes pelvic pain particularly difficult to pin down is that it rarely comes from a single source. A 2025 review in American Family Physician emphasizes that chronic pelvic pain most often results from multiple coexisting pain conditions and central nervous system hypersensitivity rather than one neat diagnosis.
Consider someone who has both endometriosis and irritable bowel syndrome. Their pain signals overlap, amplify each other, and make treatment far more complicated than addressing either condition alone. Chronic pelvic pain is also highly correlated with psychosocial comorbidities, including depression, anxiety, and a history of abuse, which means medical care that ignores the full picture often falls short. This article walks through each of the eight major causes in detail, including what distinguishes one from another, when pain signals something urgent, and what the latest medical thinking says about managing conditions that frequently travel together. For anyone caring for a loved one with dementia who also reports pelvic discomfort, understanding these causes can help you advocate for proper evaluation rather than dismissal.
Table of Contents
- What Are the Most Common Causes of Pelvic Pain in Women?
- Endometriosis and Ovarian Cysts — When Pelvic Pain Points to Reproductive Conditions
- Uterine Fibroids and Pelvic Inflammatory Disease — Two Very Different Paths to Pain
- Pelvic Floor Dysfunction and UTIs — Recognizing Treatable Sources of Daily Pain
- Interstitial Cystitis and IBS — Chronic Conditions That Mimic Each Other
- Why Pelvic Pain Often Has More Than One Cause
- What Newer Research Means for Pelvic Pain Management
- Conclusion
What Are the Most Common Causes of Pelvic Pain in Women?
The eight causes discussed here account for the vast majority of pelvic pain cases, though they present very differently. Endometriosis, where tissue similar to the uterine lining grows outside the uterus, affects roughly 10 percent of reproductive-age women worldwide, which the World Health Organization estimates at approximately 190 million people. It is a leading driver of both chronic pelvic pain and infertility. On the other end of the spectrum, a urinary tract infection causes acute pelvic pain that usually resolves within days of antibiotic treatment. Over 50 percent of women will experience at least one UTI in their lifetime, making it one of the most frequent causes of short-term pelvic discomfort. Between those two extremes sit conditions like uterine fibroids, which affect up to 80 percent of women by age 50 according to NIH data, and pelvic inflammatory disease, which the CDC estimates causes over one million cases annually in the United States.
Fibroids are noncancerous overgrowths in the uterine wall that may cause no symptoms at all or may produce heavy bleeding and significant pressure. PID, by contrast, is an active infection that can lead to chronic pain, scarring, and infertility if left untreated. The distinction matters because a fibroid discovered incidentally on an ultrasound may need nothing more than monitoring, while PID demands prompt antibiotic therapy. What complicates the picture is overlap. Someone with pelvic floor dysfunction, which affects an estimated 1 in 4 women in the United States, may also have interstitial cystitis, and the symptoms of both can mimic each other. Careful evaluation, not guesswork, is what separates an effective treatment plan from months of frustration.
Endometriosis and Ovarian Cysts — When Pelvic Pain Points to Reproductive Conditions
Endometriosis remains one of the most underdiagnosed conditions behind chronic pelvic pain. The tissue that grows outside the uterus responds to hormonal cycles just like the lining inside it, which means it thickens, breaks down, and bleeds with each menstrual period. But because this tissue has no way to exit the body, it causes inflammation, adhesions, and sometimes debilitating pain. Diagnosis often takes years. Many patients are told their pain is “normal period pain” long before anyone investigates further. For dementia caregivers supporting a family member who has always had painful periods but now struggles to articulate symptoms, this history matters when communicating with physicians. Ovarian cysts are far more common and usually far less serious.
Most are functional cysts that form during ovulation and resolve on their own within a few weeks. However, large cysts can rupture, bleed, or cause the ovary to twist on itself, a condition called ovarian torsion that produces sudden, sharp lower abdominal pain and requires emergency treatment. The important warning here is that sudden onset of severe pelvic pain, especially if accompanied by nausea, vomiting, or fever, should never be written off as a cyst that will go away. If a person with cognitive decline cannot clearly describe the severity or timeline of their pain, erring on the side of urgent evaluation is the safer path. One limitation worth noting is that imaging does not always tell the full story. An ultrasound may reveal a cyst but miss endometriosis entirely, since endometrial implants are often too small or too scattered to appear on standard imaging. Laparoscopic surgery remains the gold standard for definitive endometriosis diagnosis, which creates a real barrier for patients who are elderly, cognitively impaired, or otherwise unable to consent to or recover from surgery easily.
Uterine Fibroids and Pelvic Inflammatory Disease — Two Very Different Paths to Pain
Uterine fibroids and pelvic inflammatory disease both cause pelvic pain, but their trajectories could not be more different. Fibroids are slow-growing, noncancerous overgrowths of muscle cells in the uterine wall. They can sit quietly for decades or cause heavy, irregular, and painful periods, frequent urination, difficulty with bowel movements, and lower back pain. A woman in her sixties may have carried fibroids since her thirties without knowing it, only to have them discovered when pelvic pain finally prompts an ultrasound. After menopause, fibroids typically shrink due to declining estrogen levels, which sometimes resolves symptoms without any intervention.
PID, on the other hand, is an acute infection of the uterus, fallopian tubes, or ovaries, most often caused by sexually transmitted infections such as chlamydia and gonorrhea. It demands immediate antibiotic treatment. Left untreated, PID can cause permanent scarring of the reproductive organs, chronic pain that persists long after the infection clears, and infertility. The CDC’s estimate of over one million annual cases in the United States underscores how common this condition is, yet it is frequently missed in older adults because clinicians may not screen for STIs in patients they perceive as low-risk due to age. For caregivers, the practical takeaway is this: if someone in your care develops new pelvic pain accompanied by fever, unusual discharge, or pain during urination, PID should be on the list of possibilities regardless of age. Delayed treatment turns a curable infection into a source of lifelong discomfort.
Pelvic Floor Dysfunction and UTIs — Recognizing Treatable Sources of Daily Pain
Pelvic floor dysfunction and urinary tract infections are among the most treatable causes of pelvic pain, yet both are frequently undertreated in older adults and people with dementia. Pelvic floor dysfunction occurs when the muscles and connective tissue supporting the bladder, uterus, and rectum weaken or become injured. It causes pain, urinary incontinence, and fecal incontinence. An estimated 1 in 4 women in the United States are affected. The good news is that pelvic floor physical therapy has a strong track record for improving symptoms. The tradeoff is that it requires consistent participation over weeks or months, which can be challenging for someone with cognitive impairment who may not understand or remember the exercises. UTIs are bacterial infections of the urinary tract that cause pelvic pain, frequent urination, and burning during urination.
In older adults and particularly in people with dementia, UTIs often present atypically. Instead of complaining about burning or frequency, a person with dementia may become suddenly confused, agitated, or show a marked decline in functioning. These behavioral changes are sometimes mistaken for worsening dementia rather than recognized as signs of an infection. A urine test can confirm or rule out a UTI quickly, and treatment is usually a short course of antibiotics. The comparison between these two conditions highlights an important principle: not all pelvic pain requires complex intervention. A UTI may resolve in days. Pelvic floor therapy may produce significant improvement within a few months. But neither will get better if no one investigates the cause, which is why any new or worsening pelvic pain deserves a conversation with a healthcare provider, even when the patient has difficulty describing what they feel.
Interstitial Cystitis and IBS — Chronic Conditions That Mimic Each Other
Interstitial cystitis, also called bladder pain syndrome, and irritable bowel syndrome are both chronic, often frustrating conditions that cause pelvic pain and share enough symptoms to be easily confused. Interstitial cystitis involves chronic bladder inflammation that produces persistent pelvic pressure, pain, urinary urgency, and frequency. It is estimated to affect 3 to 8 million women in the United States. Patients often describe a constant, dull ache in the lower abdomen that worsens as the bladder fills and improves briefly after urination. IBS, meanwhile, is a functional digestive disorder causing abdominal and pelvic pain, bloating, constipation, and diarrhea, sometimes alternating between the two. It affects approximately 10 to 15 percent of the global population, and women are twice as likely to be diagnosed as men. The warning here is that these conditions frequently coexist, and treating one while ignoring the other leads to incomplete relief.
Someone who has been diagnosed with IBS but still has persistent pelvic pain unrelated to bowel patterns may also have interstitial cystitis. The reverse is also true. Neither condition has a definitive cure. Management typically involves dietary modifications, stress reduction, medications to calm bladder or bowel irritability, and sometimes physical therapy. Both conditions are also strongly associated with central sensitization, a state in which the nervous system amplifies pain signals, which helps explain why the pain often seems disproportionate to what imaging or lab work reveals. For caregivers supporting someone with dementia and chronic pelvic pain, the overlap between IC and IBS poses a particular challenge. A person who cannot reliably report whether their pain is related to urination, bowel movements, or neither makes differential diagnosis harder. Keeping a simple log of when pain seems to occur in relation to meals, bathroom use, and fluid intake can provide clinicians with valuable information that the patient may not be able to articulate on their own.
Why Pelvic Pain Often Has More Than One Cause
The 2025 medical literature makes a point that clinicians and patients alike need to absorb: chronic pelvic pain is most often the result of multiple coexisting conditions rather than a single culprit. Someone may have endometriosis, pelvic floor tension from years of guarding against pain, IBS that flares under stress, and central nervous system hypersensitivity that ties them all together. Treating just the endometriosis while ignoring the muscular and neurological components leaves the patient still in pain and wondering why surgery did not fix everything.
Other notable causes that fall outside the primary eight include adenomyosis, where endometrial tissue grows into the muscular wall of the uterus itself, pelvic congestion syndrome caused by varicose veins in the pelvis, and adhesions from prior abdominal or pelvic surgery. Each of these can produce pain that overlaps with or worsens the conditions already discussed. For a person with dementia who has had prior surgeries, adhesions are worth considering as a contributing factor, especially when pain seems to have no clear source on standard testing.
What Newer Research Means for Pelvic Pain Management
The shift in how pelvic pain is understood, from a single-cause-single-fix model to a recognition of overlapping conditions and nervous system involvement, is changing treatment approaches. Multidisciplinary pain clinics that combine gynecology, urology, gastroenterology, physical therapy, and psychological support are increasingly seen as the standard of care for complex cases.
This approach reflects what the data has been showing for years: that chronic pelvic pain correlates strongly with depression, anxiety, and trauma history, and that addressing only the physical components misses a significant piece of the puzzle. For the dementia care community, this evolution matters because it validates what many caregivers already suspect: that their loved one’s pain is real, multifaceted, and deserving of thorough investigation rather than a quick prescription or dismissal. As awareness grows and diagnostic tools improve, there is genuine reason to expect that fewer patients will endure years of unexplained pelvic pain before receiving a comprehensive evaluation.
Conclusion
Pelvic pain is common, consequential, and rarely simple. The eight causes outlined here, endometriosis, ovarian cysts, uterine fibroids, pelvic inflammatory disease, pelvic floor dysfunction, urinary tract infections, interstitial cystitis, and irritable bowel syndrome, represent the conditions most frequently behind this kind of pain. Some are acute and treatable within days. Others are chronic and require long-term management strategies.
Most people with persistent pelvic pain have more than one contributing condition, which is why a single test or a single specialist visit rarely provides the full answer. If you are caring for someone with dementia who shows signs of pelvic discomfort, whether through verbal complaints, changes in behavior, restlessness, or reluctance to move, take it seriously. Request a thorough evaluation, share any observations you have about patterns and timing, and push for a multidisciplinary approach if initial treatments do not bring relief. Pain that cannot be clearly communicated still deserves to be understood and addressed.
