Pelvic pain is pain felt in the lower abdomen or pelvic region and can involve the lower tummy, lower back or broader area around the pelvis. It can be acute and sudden or chronic and persistent, and it may be sharp, stabbing, burning, cramping, throbbing, aching, heavy or pressure-like. Pain can occur continuously or only during activities such as exercise, sexual intercourse or urination. The pelvis contains reproductive organs, the bladder, lower bowel, pelvic muscles, connective tissues and nerves, so many different systems can produce similar symptoms. NHS guidance emphasises that pelvic pain has numerous possible causes and that diagnosis may take time because several conditions have overlapping symptoms.
In people with a uterus and ovaries, common causes include period pain, ovulation-related pain, endometriosis, ovarian cysts, pelvic inflammatory disease and pregnancy-related disorders. Endometriosis can cause chronic pelvic pain, painful periods, pain during or after sex and sometimes bowel or bladder symptoms. Ovarian cysts may cause pain when they enlarge, rupture or twist the ovary. Pelvic inflammatory disease is an infection of the upper reproductive tract that can produce lower abdominal or pelvic pain and may be associated with abnormal discharge, bleeding, fever or pain during sex. Pregnancy introduces additional possibilities, including ectopic pregnancy, which can cause serious internal bleeding. These conditions require different investigations and treatments.
Urinary causes include urinary tract infection, bladder inflammation and urinary stones. A urinary infection may produce lower abdominal discomfort alongside burning urination, urinary frequency or urgency. Kidney or ureteric stones can cause severe pain that may radiate towards the groin and may be accompanied by nausea or blood in the urine. Bladder pain syndromes can produce chronic pelvic discomfort associated with urinary symptoms. Because pelvic organs are anatomically close together, urinary symptoms can coexist with gynaecological or bowel disorders, and patients may have more than one condition simultaneously. Assessment therefore commonly includes detailed questioning about urination, bowel function, sexual symptoms, menstrual history and pregnancy possibility.
Gastrointestinal disorders can also cause pelvic pain. Constipation can stretch the bowel and produce cramping, while irritable bowel syndrome can cause recurrent abdominal or pelvic discomfort associated with diarrhoea, constipation or bloating. Inflammatory bowel disease can cause persistent pain with diarrhoea, rectal bleeding, weight loss and systemic inflammation. Diverticular disease and other bowel disorders can produce lower abdominal pain. The relationship between bowel function and pelvic pain can be complex because pelvic nerves and muscles participate in defecation and continence, while chronic bowel symptoms can lead to pelvic-floor muscle tension. A diagnosis should therefore consider the digestive system rather than assuming that lower abdominal pain is necessarily reproductive or urinary.
Pelvic-floor muscles can themselves become a source of pain. Overactivity, spasm, injury or impaired coordination can produce aching, pressure or burning sensations and may cause pain during sexual intercourse, urination or bowel movements. Musculoskeletal problems involving the hips, lower back, abdominal wall or sacroiliac region can also be perceived as pelvic pain. Nerve-related pain can be burning, shooting, electric or associated with altered sensation. Chronic pelvic pain may involve several overlapping mechanisms, including persistent inflammation, nerve sensitisation, muscle dysfunction and visceral hypersensitivity. NICE recognises chronic primary visceral and musculoskeletal pain among chronic primary pain categories, illustrating that pelvic symptoms can sometimes persist without one structural lesion explaining the entire presentation.
Infection is an important cause because untreated infection can damage tissues and produce systemic illness. Pelvic inflammatory disease may follow sexually transmitted infections such as chlamydia or gonorrhoea and can cause pelvic pain, abnormal vaginal discharge, bleeding and fever. Severe pelvic pain with high temperature, vomiting, dizziness, heavy bleeding or marked tenderness can indicate serious infection or another acute emergency. Septic processes can progress rapidly, while reproductive emergencies such as ovarian torsion or ectopic pregnancy can also require urgent treatment. Consequently, pelvic pain accompanied by systemic illness, pregnancy possibility, significant bleeding or sudden severe onset should not be managed solely with home analgesics.
Chronic pelvic pain is particularly complex because symptoms may persist after the original trigger has resolved or because several conditions coexist. Endometriosis, bladder disorders, bowel disorders, pelvic-floor dysfunction and chronic pain sensitisation can overlap, and psychological stress can influence symptom severity without being the sole cause. Diagnosis may require repeated assessment because the first working diagnosis can change as new evidence appears.
Clinical assessment can include abdominal and pelvic examination, pregnancy testing, urine tests, infection testing, blood tests and ultrasound or other imaging when indicated. The absence of an obvious abnormality does not mean that the pain is fabricated or insignificant; chronic pain mechanisms can produce substantial symptoms without a single visible lesion.
Emergency assessment is appropriate for sudden severe pelvic or lower abdominal pain, especially when accompanied by heavy vaginal bleeding, faintness, dizziness, fever, vomiting, severe tenderness or possible pregnancy. NHS guidance specifically advises emergency care for severe or worsening pelvic pain with heavy vaginal bleeding, sudden intense lower abdominal pain, high temperature, dizziness or feeling very unwell in the context of suspected pelvic inflammatory disease.
More persistent or recurrent pelvic pain should be assessed because causes such as endometriosis, ovarian disease, bowel disorders, urinary conditions and chronic pelvic pain syndromes can require targeted treatment. The location alone is not diagnostic; the timing, associated symptoms and reproductive, urinary and gastrointestinal context are essential to determining the likely cause.
