Pain during sex is common, and it almost always has a physical explanation. Roughly 75% of women experience it at some point, and it affects men too, though less frequently. The causes range from simple fixes like insufficient lubrication to conditions that need medical attention, like infections or endometriosis. Understanding where and when the pain happens is the single most useful clue for figuring out what’s going on.
Location Matters: Entry Pain vs. Deep Pain
Pain during sex generally falls into two categories based on where you feel it. Entry pain happens right at the vaginal opening during initial penetration. Deep pain occurs further inside, typically with thrusting. These two types point to very different causes, so paying attention to exactly where it hurts gives you (and a doctor, if you see one) the best starting point.
Entry pain is more often related to skin sensitivity, muscle tension, dryness, or infections at the vulva or vaginal opening. Deep pain tends to involve internal organs or structures like the uterus, ovaries, or pelvic ligaments.
Common Causes of Pain at the Opening
One of the most frequent causes of entry pain is simply not enough lubrication. This can happen when arousal is insufficient, but it also results from hormonal changes, medications (especially antihistamines, antidepressants, and hormonal birth control), dehydration, or stress. Without adequate moisture, friction against delicate tissue causes burning or stinging that can persist after sex ends.
Vulvodynia is persistent pain at the vulva that doesn’t have an obvious cause like an infection or skin condition. It can be localized to the vestibule (the tissue surrounding the vaginal opening) or more widespread. Doctors identify the pain areas using a simple cotton swab test, gently pressing different spots to map where the sensitivity is. For many people with this condition, the pain is provoked, meaning it only flares with touch or pressure, which is why sex becomes the main trigger.
Infections are another common culprit. Yeast infections, bacterial vaginosis, urinary tract infections, and sexually transmitted infections like herpes or chlamydia can all make the vaginal area raw, swollen, or tender. These usually come with other symptoms like unusual discharge, itching, or burning during urination.
Skin conditions affecting the vulva, including eczema, lichen sclerosus, or contact dermatitis from soaps, detergents, or latex, can make the tissue fragile and reactive to any friction.
When Muscles Work Against You
The pelvic floor is a group of muscles that supports the bladder, uterus, and rectum. When these muscles are chronically tight or go into spasm involuntarily, penetration can feel like hitting a wall, or produce sharp, burning pain.
Vaginismus is a specific form of this where the vaginal muscles contract automatically when anything approaches the opening. It’s not something you choose to do or can simply relax through. The NHS describes it as an automatic reaction you don’t have control over. It can develop after a painful experience, an infection, anxiety about sex, or sometimes without any identifiable trigger. Some people have it from their very first attempt at penetration, while others develop it later.
Even without full vaginismus, general pelvic floor tension (sometimes called a hypertonic pelvic floor) can make sex uncomfortable. This tension often builds gradually from stress, posture habits, prior injuries, or holding patterns you’re not even aware of. The muscles essentially forget how to relax fully, making penetration painful even when everything else is healthy.
Causes of Deep Pain During Sex
Endometriosis is one of the most common causes of deep pain during sex. It occurs when tissue similar to the uterine lining grows outside the uterus, often on the ovaries, fallopian tubes, or the ligaments behind the uterus. These growths respond to hormonal cycles, becoming inflamed and tender. During deep penetration, pressure against these areas can produce sharp or aching pain that sometimes lingers for hours afterward.
Pelvic inflammatory disease, usually caused by untreated sexually transmitted infections, creates inflammation in the uterus, fallopian tubes, or surrounding tissue. Ovarian cysts can cause sudden, intense pain if they’re pressed during sex. Uterine fibroids, which are noncancerous growths in the uterine wall, may cause deep discomfort depending on their size and location. A retroverted uterus (one that tilts backward instead of forward) can make certain positions more painful because the cervix sits at a different angle.
Irritable bowel syndrome, bladder inflammation (interstitial cystitis), and even hemorrhoids can contribute to deep pelvic pain during sex because the organs are so close together that inflammation in one area affects sensation in its neighbors.
Hormonal Changes and Vaginal Dryness
Estrogen plays a major role in keeping vaginal tissue thick, elastic, and naturally lubricated. When estrogen drops, the vaginal lining becomes thinner, drier, less elastic, and more fragile. A healthy vaginal lining is several layers thick and naturally moist. Without adequate estrogen, it thins to fewer layers and loses that moisture.
This happens most dramatically during and after menopause, but it also occurs during breastfeeding, after surgical removal of the ovaries, during certain cancer treatments, and sometimes while taking hormonal birth control. The result is tissue that tears and irritates easily during sex, causing burning, stinging, or a raw feeling that can last for days.
Younger people aren’t immune to this. Hormonal contraceptives lower circulating estrogen levels, and some users notice increased dryness and discomfort as a result.
Painful Sex in Men
Though discussed less often, men experience painful sex too. Phimosis, a tight foreskin that doesn’t retract easily, can cause pain or tearing during intercourse. Frenulum tears (small rips in the band of tissue on the underside of the penis) are common and intensely painful, though they heal quickly.
Prostatitis, or inflammation of the prostate gland, often causes pain with ejaculation. It frequently results from a bacterial infection, sometimes from a sexually transmitted one. Infections like urethritis or epididymitis (inflammation of the tube behind the testicle) can also make sex painful. Peyronie’s disease, where scar tissue causes the penis to curve, produces pain during erections that may worsen with penetration.
Men can also have pelvic floor dysfunction. Chronic tension in the pelvic floor muscles can cause pain during or after sex, often described as a deep ache in the pelvis, perineum, or base of the penis.
What Actually Helps
The right approach depends entirely on the cause, which is why pinpointing the type and location of pain matters so much.
For lubrication issues, a quality lubricant can make an immediate difference. The World Health Organization recommends vaginal lubricants with an osmolality below 1,200 mOsm/kg and a pH around 4.5, which matches the vagina’s natural environment. Lubricants with high glycol content (above about 8.3%) or those containing certain preservatives like polyquaternium compounds can actually irritate tissue and make things worse. Water-based and silicone-based options are generally safer choices than products loaded with warming agents, flavors, or fragrances.
Pelvic floor physical therapy is one of the most effective treatments for muscle-related pain. For dyspareunia specifically, about 45% of patients report improvement with pelvic floor therapy, and studies show significant improvements in both pain scores and overall sexual function compared to no treatment. For pelvic floor myofascial pain more broadly, 59 to 80% of women report improvement. Therapy typically involves internal and external techniques to release tension, along with exercises to retrain the muscles to relax. Some people notice improvement within a few weeks of twice-weekly sessions, with benefits lasting months after treatment ends.
For hormonal causes, topical estrogen applied directly to vaginal tissue can restore thickness, elasticity, and moisture. Non-hormonal vaginal moisturizers used regularly (not just during sex) also help by maintaining hydration in the tissue between sexual activity.
Infections require treatment of the underlying cause, whether that’s antifungal medication for yeast, antibiotics for bacterial infections, or antiviral therapy for herpes. Pain typically resolves once the infection clears.
Conditions like endometriosis, fibroids, or ovarian cysts may require more involved treatment ranging from hormonal management to surgical options depending on severity. For localized vulvar pain that hasn’t responded to other approaches, a minor surgical procedure called a vestibulectomy has shown effectiveness, though it’s considered a last resort after other options have been tried.
Positions and Timing Can Help Too
While addressing the root cause is the goal, practical adjustments during sex can reduce pain in the meantime. Positions that give you control over depth and angle of penetration (being on top, for instance) let you avoid pressure on sensitive areas. Spending more time on arousal before penetration increases natural lubrication and allows the vaginal canal to lengthen and relax. For deep pain, shallower penetration or using a buffer ring (a wearable device that limits penetration depth) can help.
Timing matters for some conditions. Pain from endometriosis often fluctuates with the menstrual cycle, and some people find sex is less painful at certain times of the month. If dryness is the issue, applying lubricant before arousal begins, rather than waiting until penetration, gives the tissue a protective layer from the start.