Pain during sex is common, affecting an estimated 10% to 20% of women in the U.S. alone, and it happens to men too. The causes range from simple fixes like insufficient lubrication to underlying conditions that need medical attention. Understanding where and when the pain occurs is the fastest way to narrow down what’s going on.
Where the Pain Happens Matters
Pain during sex generally falls into two categories: pain at the entrance and pain deeper inside the pelvis. These point to very different causes, so paying attention to the location helps identify the problem.
Pain at the vaginal opening is often related to skin irritation, infections, dryness, or muscle tension. It typically flares at the start of penetration. Deep pain, felt further inside the pelvis or lower abdomen, tends to show up with certain positions or deep thrusting. That pattern usually points to internal conditions like endometriosis, ovarian cysts, fibroids, or pelvic inflammatory disease.
Dryness and Hormonal Changes
Insufficient lubrication is one of the most straightforward causes of painful sex, and one of the easiest to address. Arousal, stress levels, medications (especially antihistamines and some antidepressants), and hormonal shifts all affect how much natural moisture the body produces.
For people going through menopause or perimenopause, hormonal changes play a bigger role. When estrogen levels drop, vaginal tissue becomes thinner, drier, less elastic, and more fragile. The vaginal canal can also shorten and tighten over time. This combination makes penetration uncomfortable or outright painful, and light bleeding afterward is common. These changes aren’t limited to menopause: breastfeeding, certain cancer treatments, and surgical removal of the ovaries can all lower estrogen enough to cause the same symptoms.
Infections and Inflammation
Yeast infections, bacterial vaginosis, urinary tract infections, and sexually transmitted infections like herpes or genital warts all cause inflammation in the genital area. Inflamed tissue is more sensitive to pressure and friction, so sex that would normally feel fine becomes painful. The pain often comes with other symptoms like unusual discharge, itching, burning during urination, or visible sores. Treating the underlying infection typically resolves the pain.
Bladder conditions can also be a factor. Chronic UTIs, interstitial cystitis (a condition causing persistent bladder pressure and pain), and urinary frequency all make sex uncomfortable because the bladder sits right next to the vaginal wall. Pressure during intercourse pushes against already-irritated tissue.
Muscle Tension and Nerve Pain
Sometimes the muscles around the vaginal opening involuntarily clench during penetration. This is called vaginismus, and it can make sex feel impossible, like hitting a wall. The tightening is reflexive, not something you’re choosing to do, and it can be triggered by anxiety, past trauma, or simply anticipating pain from previous painful experiences. It creates a frustrating cycle: pain causes muscle guarding, which causes more pain.
Vulvodynia is a different condition where the tissue around the vaginal opening develops chronic pain, burning, or stinging with no visible cause. A hallmark of vulvodynia is that even light touch to specific areas of the vestibule (the tissue just inside the labia) triggers sharp pain. Both conditions are real, diagnosable, and treatable, though they’re often underdiagnosed because the tissue looks normal on a standard exam.
Internal Conditions That Cause Deep Pain
When pain occurs deep in the pelvis during sex, the list of possible causes includes endometriosis, pelvic inflammatory disease, uterine fibroids, ovarian cysts, a retroverted (tilted) uterus, uterine prolapse, and adenomyosis. Irritable bowel syndrome and even hemorrhoids can contribute too, since the structures in the pelvis are packed closely together.
Endometriosis, where tissue similar to the uterine lining grows outside the uterus, is one of the more common culprits. The misplaced tissue responds to hormonal cycles and creates inflammation, scarring, and adhesions that pull on pelvic organs. Certain positions that allow deeper penetration tend to make this pain worse. Pelvic inflammatory disease, usually caused by untreated STIs, inflames the reproductive organs and can cause a similar deep, aching pain during sex.
Pain During Sex for Men
Men experience painful sex too, though it’s discussed less often. Prostatitis, an inflammation of the prostate gland, is one of the more common causes. It often results from a bacterial infection and can cause pain during or after ejaculation. Some sexually transmitted infections also cause prostatitis.
Tight foreskin (phimosis) can make penetration painful due to restricted movement and micro-tears. Infections under the foreskin, Peyronie’s disease (scar tissue causing curved, painful erections), and skin conditions on the penis can all contribute. Men may also experience pain from friction if there isn’t enough lubrication.
Lubricants: Choosing the Right One
Using a lubricant can help enormously, but some ingredients actually make things worse for sensitive skin. Glycerin, found in many popular brands, can act as a food source for yeast. If you’re prone to yeast infections, look for glycerin-free options. Propylene glycol and preservatives like phenoxyethanol can physically irritate delicate tissue.
A few ingredients are worth actively avoiding. Nonoxynol-9, a spermicide, severely irritates skin surfaces. Menthol, marketed as a “sensation enhancer,” is an alcohol that can cause lasting skin pain. Products containing lidocaine (a numbing agent) are particularly risky because they mask pain, which dramatically increases the chance of tissue damage you won’t feel until later. Water-based lubricants without fragrances or warming/cooling additives are generally the safest starting point.
What a Medical Evaluation Looks Like
If pain during sex is persistent, a medical evaluation typically starts with a detailed conversation about when the pain began, exactly where it hurts, whether it happens in all positions or just some, and whether it occurs with every partner. This history alone narrows the possibilities significantly.
A pelvic exam checks for signs of skin irritation, infection, or structural issues. Your provider may apply gentle pressure to different areas of the genitals and pelvic muscles to pinpoint the pain. A speculum exam allows a visual inspection of the vaginal walls. If internal conditions are suspected, a pelvic ultrasound can reveal fibroids, cysts, or other structural causes. For vulvodynia, the diagnostic tool is surprisingly low-tech: a cotton swab gently touched to different spots around the vaginal opening to map where normal pressure registers as pain.
Treatment Options That Work
Treatment depends entirely on the cause. Infections clear up with appropriate medication. Hormonal changes respond to topical estrogen or moisturizers designed for vaginal tissue. Endometriosis and fibroids may need hormonal management or, in some cases, surgery.
For muscle-related pain like vaginismus or tight pelvic floor muscles, pelvic floor physical therapy is one of the most effective approaches. A pelvic floor therapist uses manual techniques, gentle internal massage, and trigger point release to help chronically tight muscles learn to relax. Biofeedback, which uses sensors to show muscle activity in real time, helps you retrain muscles you may not even realize you’re clenching. Vaginal dilators, graduated tubes of increasing size, gently stretch the muscles and train them to stay relaxed during insertion. Electrical stimulation with mild currents can also help normalize nerve activity in the area.
Psychological factors play a role too, especially when pain has been present for a while. Anxiety about pain creates physical tension, which creates more pain. Therapy that addresses the emotional side, sometimes alongside physical treatment, breaks that cycle. Pain during sex is not something you need to push through or accept as normal. Nearly every cause has a specific, effective treatment once it’s correctly identified.