Pain during sex affects an estimated 3 to 18 percent of women worldwide, and it happens to men too. The causes range from simple and fixable (not enough lubrication) to complex and medical (endometriosis, infections, skin conditions). Where you feel the pain, what kind of pain it is, and when it starts are the biggest clues to what’s going on.
The medical term is dyspareunia, but the experience breaks into two broad categories: pain at the entrance during penetration, and deeper pain felt inside the pelvis. These have different causes, different mechanisms, and different solutions.
Entry Pain vs. Deep Pain
Pain at the vaginal entrance typically feels like burning, stinging, or rawness. It’s most commonly linked to vaginal dryness, yeast infections or other forms of vaginitis, chronic vulvar pain conditions, or tissue thinning from low estrogen. Structural irregularities at the vaginal opening can also cause it.
Deep pain feels different. It’s usually an aching or pressure sensation felt in the lower pelvis during thrusting. Endometriosis, pelvic inflammatory disease, uterine fibroids, and a condition called pelvic congestion syndrome (essentially varicose veins in the pelvis) are the most common culprits. The location and timing of the pain are genuinely useful diagnostic information, so paying attention to exactly where and when it hurts helps pinpoint the cause.
Not Enough Lubrication
This is the most common and most straightforward reason sex hurts. Without adequate lubrication, friction against the vaginal walls causes burning, irritation, and sometimes small tears in the tissue. The fix seems obvious, but it’s worth understanding why it happens: stress, certain medications (especially antihistamines and some antidepressants), not enough arousal time, dehydration, and hormonal changes can all reduce your body’s natural lubrication.
Water-based lubricants help, but quality matters. The World Health Organization recommends lubricants with an osmolality below 1,200 mOsm/kg, because products above that threshold can actually damage vaginal tissue and make things worse. Many widely available drugstore lubricants exceed this cutoff, so checking the label or choosing a product specifically formulated to be iso-osmotic is worth the effort.
Hormonal Changes and Tissue Thinning
As estrogen levels drop during menopause, perimenopause, or while breastfeeding, the vaginal lining undergoes real physical changes. Tissue that was once several layers thick, elastic, and naturally moist becomes thinner, drier, and more fragile. This is called vaginal atrophy, and it’s part of a broader pattern known as genitourinary syndrome of menopause.
The result is pain during sex, sometimes accompanied by light bleeding afterward. This isn’t something willpower or extra foreplay can overcome on its own, because the tissue itself has changed. Topical estrogen, vaginal moisturizers used regularly (not just during sex), and lubricants are the primary approaches. The condition is progressive, meaning it tends to worsen without treatment, but it responds well to hormonal therapy when appropriate.
Pelvic Floor Muscle Tension
Your pelvic floor muscles wrap around the vaginal opening, and when they involuntarily tighten during penetration, the result can feel like hitting a wall. This involuntary clenching was historically called vaginismus and is now classified as a phobic response characterized by fear, anxiety, and significant emotional distress around penetration. Electromyography studies confirm that people with this condition show measurably higher resting muscle tone in the pelvic floor compared to those without it.
What makes this particularly frustrating is the cycle it creates. You anticipate pain, so the muscles tighten. The tightness causes pain, which confirms the fear, which makes the muscles tighten more next time. The dread of pain becomes self-fulfilling. This is one of the most treatable causes of painful sex. Pelvic floor physical therapy, which involves learning to identify, relax, and control these muscles, gets high marks from patients. In one prospective study, patients rated the success of treatment for sexual pain at a median of 8 out of 10, with those treated specifically for pelvic pain and dyspareunia rating it 9 out of 10. Therapy often includes graduated dilator exercises, breathing techniques, and sometimes biofeedback to help you see your muscle activity in real time.
Endometriosis
Endometriosis is one of the leading causes of deep pain during sex. It occurs when tissue similar to the uterine lining grows outside the uterus, often on structures called the uterosacral ligaments and the cul-de-sac, a small pouch of tissue between the uterus and rectum. During deep penetration, pressure against these areas triggers pain because the endometrial implants create local nerve inflammation. Research has shown that nerve density in these areas directly correlates with pain severity.
In one study, nearly 70 percent of patients with deep endometrial nodules on the uterosacral ligaments reported significant tenderness in that region. The pain tends to be position-dependent, meaning certain angles or depths of penetration are worse than others. Surgical excision of endometriosis from the cul-de-sac and uterosacral ligaments is an established treatment for this specific type of deep sexual pain, though hormonal suppression and pelvic floor therapy also play a role in management.
Infections and Inflammation
Vaginal infections like yeast infections and bacterial vaginosis cause burning entry pain because inflamed tissue is hypersensitive to friction and pressure. These are usually temporary and resolve with treatment, but recurring infections can create a chronic pain pattern.
Pelvic inflammatory disease, typically caused by untreated sexually transmitted infections, produces deep pelvic pain through a different mechanism. The infection travels upward into the uterus, fallopian tubes, and surrounding tissue, causing inflammation and eventually scarring. That scarring can pull on pelvic structures during sex, creating a deep ache that persists long after the original infection is gone. Urinary tract infections can also make sex painful, though the pain is usually more of a burning sensation concentrated near the urethra.
Skin Conditions on the Vulva
Lichen sclerosus is a chronic skin condition that affects the vulva and can make sex extremely painful or impossible. It causes the skin to become thin, white, and fragile, leading to erosions, fissures, and scarring. Over time, the scarring can fuse the labia together and narrow the vaginal opening, a process called introital stenosis. In advanced cases, the opening becomes too narrow for penetration.
Other vulvar skin conditions, including lichen planus and contact dermatitis from soaps, detergents, or personal care products, can also cause burning and rawness during sex. These conditions are often misdiagnosed as recurrent yeast infections, which delays proper treatment. If you’ve been treated for yeast multiple times without improvement, a vulvar skin condition is worth investigating.
Pain During Sex for Men
Painful sex isn’t exclusively a women’s issue. Men can experience pain from a tight foreskin (phimosis) that doesn’t retract properly, causing tearing or pinching during penetration. Prostatitis, an inflammation of the prostate gland, can cause pain with ejaculation that makes sex unpleasant even when penetration itself doesn’t hurt. Peyronie’s disease, where scar tissue inside the penis causes curvature and pain during erections, is another common cause. Infections like urethritis or sexually transmitted infections can cause burning pain during or after sex for men as well.
What Helps
The right approach depends entirely on the cause, which is why identifying where the pain is and what it feels like matters so much. For dryness and friction, lubricants and extended foreplay are the first step. For hormonal tissue changes, topical estrogen or vaginal moisturizers address the root problem. For pelvic floor tension, physical therapy has strong patient-reported outcomes. For endometriosis, treatment ranges from hormonal management to surgical excision. For skin conditions, proper diagnosis and targeted treatment (often a prescription-strength topical steroid) can restore comfort.
Positions matter too. Deep pain is often position-dependent, and shallower angles of penetration or positions where you control the depth can reduce or eliminate it. This isn’t a workaround for avoiding diagnosis, but it can make sex more comfortable while you’re figuring out what’s going on. Pain during sex is common enough that a large body of research and clinical expertise exists around it. A British population survey found that 7.5 percent of sexually active women reported painful sex lasting three months or more, yet fewer than 2 percent met criteria for the most severe, persistent form. Most causes are identifiable and most are treatable.