Painful Sex: Common Causes and What Actually Helps

Pain during sex is one of the most common things people don’t mention. Not to a partner, often not to a doctor, sometimes not even to themselves in words that make it real. It gets absorbed into a vague sense that something isn’t working, and then into avoidance.

The single most useful thing to know is this: pain during sex is common, it is almost always treatable, and it is never something to endure quietly. It is also not, in the overwhelming majority of cases, a psychological problem — though persistent pain reliably creates psychological consequences, which is a different thing.

This guide covers what actually causes it, what helps, and the point at which waiting stops being reasonable.

Start here: pain is information

There’s a piece of received wisdom that deserves to be retired — the idea that some discomfort is normal, that you get used to it, that it settles with experience.

Pain is the body reporting a problem. Sometimes the problem is small and mechanical. Sometimes it points to a condition that responds well to treatment. In neither case does pushing through improve anything, and in both cases it makes things worse through a specific mechanism worth understanding.

When intercourse has been painful, the pelvic floor muscles begin to anticipate. They tighten before and during, involuntarily, which narrows the vaginal opening and increases friction — producing more pain, which produces more tightening. This loop is why a problem that started as something minor and physical can persist long after the original cause is gone.

Breaking that loop is usually part of the treatment, and it works better the earlier it starts.

Insufficient lubrication — the most common cause, and the most misread

This is where most cases begin, and where most are misinterpreted.

Vaginal lubrication is produced during arousal, but the amount varies enormously between people and across circumstances — hormonal state, medication, hydration, stress, time of cycle, and simply the day. Reduced lubrication is not a reliable indicator of desire or attraction, which is the misreading that causes unnecessary distress in couples.

Common causes of dryness that have nothing to do with interest: hormonal contraception, breastfeeding, perimenopause and menopause, antihistamines, some antidepressants, and stress.

The practical fix is often straightforward. A good water-based lubricant resolves friction-related pain more often than people expect, and using one is not an admission of anything. Longer arousal time helps too — the average time to full arousal is longer than most couples allow for.

Pelvic floor tension

The pelvic floor is a sling of muscle supporting the pelvic organs. Like any muscle group it can become chronically tight, and when it does, penetration becomes painful or impossible.

Causes include chronic stress, previous painful experiences, high-impact exercise, childbirth, and sometimes no identifiable trigger at all. The sensation is typically described as hitting a wall, or burning at the entrance, or a feeling that something is too small rather than too tight.

This responds well to pelvic floor physiotherapy — a specialty that many people don’t know exists. It involves assessment, manual release techniques, and exercises aimed at relaxation rather than strengthening. It’s worth being specific here: Kegel exercises, which strengthen the pelvic floor, can make tension-related pain worse. Strength and tension are different problems requiring opposite approaches. We’ve written about pelvic floor health in more detail.

Hormonal causes

Oestrogen maintains the thickness, elasticity and lubrication of vaginal tissue. When it drops, tissue becomes thinner, drier and more fragile — a condition called genitourinary syndrome of menopause, though it isn’t limited to menopause.

It occurs during perimenopause and menopause, while breastfeeding, after certain cancer treatments, and sometimes with hormonal contraception. Symptoms include dryness, burning, irritation, pain during sex, and sometimes urinary frequency.

This is highly treatable. Local oestrogen therapy — a cream, tablet or ring applied vaginally — restores tissue quality in most cases, with minimal systemic absorption. Non-hormonal vaginal moisturisers, used regularly rather than only during sex, also help substantially. Both are worth discussing with a doctor rather than assuming nothing can be done.

Infections and skin conditions

Several common conditions cause pain and are frequently self-misdiagnosed.

Thrush and bacterial vaginosis both cause irritation and are often treated with the wrong product, since symptoms overlap and over-the-counter thrush treatments are widely available. Repeated self-treatment without testing is a common reason for persistent symptoms.

Skin conditions affecting the vulva — lichen sclerosus, lichen planus, contact dermatitis — cause pain, itching and sometimes visible changes. These need medical diagnosis and often respond very well to treatment, but are frequently missed for years.

Urinary tract infections cause pain during sex as well as during urination.

If symptoms recur or persist, ask for testing rather than treating repeatedly on assumption.

Deep pain rather than entrance pain

Where the pain occurs is diagnostically useful.

Pain at the entrance usually points to lubrication, muscle tension, skin conditions, or vestibulodynia — a condition involving hypersensitivity at the vaginal opening.

Deep pain, felt during deeper penetration or in certain positions, points elsewhere: endometriosis, fibroids, ovarian cysts, pelvic inflammatory disease, or a retroverted uterus. Endometriosis in particular is both common and notoriously slow to diagnose — the average delay is measured in years, largely because pain is normalised at every stage.

Deep pain that recurs warrants investigation, not adjustment of position.

What helps while you’re working it out

None of these replace diagnosis, but all reduce harm in the meantime.

Use more lubricant than seems necessary, and reapply. Friction compounds every other cause.

Extend arousal time considerably. Physical readiness lags behind mental readiness in most people, and rushing that gap is a mechanical cause of pain in itself.

Change positions to control depth. Positions where the receiving partner controls angle and pace allow immediate adjustment.

Stop when it hurts, every time. This is the single most important intervention for breaking the anticipation loop described above.

Consider taking penetration off the table temporarily. Removing the expectation reduces the anticipatory tension that maintains the cycle, and often makes returning to it easier later.

Avoid numbing products. They mask the signal without addressing the cause, and allow tissue damage to occur unnoticed.

When to see a doctor

Sooner than most people do. Specifically:

Pain that has occurred more than a few times, rather than once in unusual circumstances. Bleeding after sex. Pain accompanied by unusual discharge, odour, or visible skin changes. Deep pain in particular positions. Pain that began after childbirth, surgery, or starting a medication. Any pain that has led you to start avoiding intimacy.

What to ask for: a proper examination, testing for infection rather than assumption, and — if the initial assessment finds nothing — referral to a gynaecologist or pelvic floor physiotherapist. If a clinician tells you to relax, have a glass of wine, or that it’s in your head, that is not an assessment. Ask someone else.

The part worth holding onto

Pain during sex has causes, and causes have treatments. The obstacles to resolving it are rarely medical — they’re the delay in mentioning it, the assumption that it’s normal, and the reluctance to insist when first dismissed.

None of those are things you need to accept. Persistent pain is also one of the most reliable causes of reduced desire, which is worth knowing if you’ve been trying to understand why wanting has changed — sometimes the answer is simpler than it appears.