The Short Answer
The most common causes of painful sex are insufficient lubrication and insufficient arousal time, followed by infections such as thrush or bacterial vaginosis, skin conditions, pelvic floor muscle tension including vaginismus, and hormonal changes from contraception, breastfeeding or menopause. Deep pain can indicate endometriosis, fibroids or ovarian cysts. Any pain that recurs should be assessed by a doctor rather than managed at home.
Key Takeaways
Pain is a signal to stop, not something to endure quietly.
Not enough arousal time and not enough lubricant explain a large share of cases.
Recurring pain always warrants a GP or sexual health clinic appointment.
Most causes, including muscular and hormonal ones, respond well to treatment.
The First Thing to Know
Pain during sex has a medical name, dyspareunia, and it is far more common than the silence around it suggests. Surveys consistently find that a large minority of women experience it at some point, and a meaningful number of men do too. Very few of them mention it to anyone.
Two beliefs keep people quiet, and both are wrong. The first is that pain is simply part of sex, particularly early on. It is not. Some tightness or unfamiliarity the first few times is common; sharp, burning or persistent pain is not. The second is that mentioning it will hurt a partner's feelings. A partner who would rather you were in pain than told them is not a partner worth protecting from the information.
Stop means stop, including for pain
If something hurts, stop. Not "in a minute", not after this bit. Continuing through pain teaches your body to associate sex with bracing, and that muscular anticipation becomes its own cause of pain over time, which is one of the ways a short-term problem turns into a long-term one.
Pain at the Entrance: The Most Common Causes
Clinicians usually separate pain into superficial, felt at or near the entrance, and deep, felt further inside. The distinction matters because it points to quite different causes. Superficial pain is the more common of the two and has the most straightforward explanations.
Not enough lubrication
The single most common cause. Natural lubrication is affected by hydration, stress, antihistamines, hormonal contraception, antidepressants, breastfeeding and menopause. The fix is often as simple as a good water-based lubricant, generously and repeatedly applied.
Not enough arousal time
Arousal causes physical changes that make penetration comfortable, including lubrication and the lengthening of the vaginal canal. Those changes take time, often considerably longer than people expect. Rushing them causes pain that has nothing to do with anything being wrong.
Infection
Thrush, bacterial vaginosis, urinary tract infections and sexually transmitted infections all cause soreness, burning or itching. These are treatable, often quickly, and are one of the main reasons not to wait before seeing someone.
Skin conditions and irritation
Eczema, lichen sclerosus and contact dermatitis from scented soaps, washes, wipes or heavily perfumed lubricants are frequent and frequently missed causes of persistent burning.
Pelvic floor tension and vaginismus
The pelvic floor muscles can tighten involuntarily, sometimes making penetration painful or impossible. It is not deliberate and not a psychological failing. Pelvic floor physiotherapy has a strong track record here.
Hormonal change
Falling oestrogen during breastfeeding, perimenopause and menopause thins and dries vaginal tissue. This responds well to treatment, including topical options a GP can prescribe.
Deep Pain: When to Take It More Seriously
Pain felt deep inside, particularly with deeper penetration or in certain positions, has a different set of causes. Some are positional and easily solved. Others point to conditions that benefit from early diagnosis, which is why deep pain should not be managed at home indefinitely.
Endometriosis. Tissue similar to the uterine lining growing outside the uterus. Deep pain during sex is a classic symptom, often alongside painful or heavy periods. Diagnosis is frequently delayed by years, so raising it explicitly with a GP is worthwhile.
Fibroids and ovarian cysts. Both can cause deep or positional pain, and both are readily identified on a scan.
Pelvic inflammatory disease. Usually caused by an untreated sexually transmitted infection. It needs prompt antibiotic treatment, as it can affect fertility if left.
Irritable bowel syndrome and bladder conditions. Interstitial cystitis and IBS both refer pain into the pelvis and are often overlooked in this context.
Depth and angle. Sometimes it is purely mechanical. If pain only occurs in certain positions, controlling depth usually resolves it. Our sex positions guide covers which arrangements give the receiving partner depth control.
Painful Sex Affects Men Too
It is discussed far less, but men experience pain during sex as well, and the causes are equally treatable. Reporting rates are low largely because the expectation that men do not have sexual pain keeps them from mentioning it.
Friction and dryness
Soreness from insufficient lubrication is just as common for the penetrating partner, and just as easily solved.
A tight foreskin
Phimosis and a tight frenulum can cause pain or tearing. Both have straightforward medical solutions.
Infection or inflammation
Balanitis, urinary tract and sexually transmitted infections and prostatitis all cause pain during or after sex and need diagnosis rather than guesswork.
Peyronie's disease, in which scar tissue causes curvature and pain, is another cause worth naming because men often assume nothing can be done about it. Our For Him guide covers the health concerns men most often avoid raising.
What Helps While You Get It Looked At
None of the following replaces a diagnosis, but several of them resolve mild cases outright and all of them make things more comfortable in the meantime.
Use much more lubricant. Water-based, unscented, glycerin-free if you are prone to thrush. Reapply rather than pushing on.
Extend the build-up considerably. Arousal is a physical process with a physical timeline. Doubling the time before penetration solves a surprising proportion of cases.
Let the receiving partner control depth and pace. Positions where they set the movement remove the guesswork entirely.
Stop scented products. No perfumed soap, shower gel, wipes, bubble bath or douching anywhere near the genitals. Plain water is correct.
Take penetration off the table for a while. Removing the source of anticipated pain lets the muscular bracing settle, and it keeps intimacy alive while you sort the cause out.
Tell your partner plainly. Not as criticism, as information. How to raise it is easier with a structure.
See a doctor without delay if you have any of these
Bleeding after sex, unusual discharge or odour, a fever alongside pelvic pain, pain that is worsening, pain that has begun suddenly after previously comfortable sex, sores or lesions, or pain severe enough that penetration is impossible. These need assessment rather than home management.
NHS guidance is explicit that pain during sex, whether it happens once or repeatedly, should be checked by a GP. Clinics deal with this constantly and there is nothing embarrassing about it. If it helps, write down when the pain occurs, where it is felt and what it feels like before the appointment, because those three details narrow the diagnosis significantly.
Further Reading
This article supports our full For Her guide, which covers the subject end to end. For anything about how we write and review this material, see about us or the FAQ.
For clinical and public-health information beyond the scope of an educational guide, these independent sources are worth reading:
A note on medical advice
How To Sex is an educational publisher, not a medical provider. Nothing here is a diagnosis or a treatment plan. Anything involving your own body, symptoms, medication or pregnancy should go to a qualified healthcare professional.
Frequently Asked Questions
Why does sex hurt for women?
The most common causes are insufficient lubrication and insufficient arousal time, followed by infections such as thrush or bacterial vaginosis, skin conditions, pelvic floor muscle tension, and hormonal changes from contraception, breastfeeding or menopause. Deep pain can point to endometriosis, fibroids, cysts or pelvic inflammatory disease. Most of these are treatable, and recurring pain should be assessed by a doctor.
Is it normal for sex to hurt the first time?
Some unfamiliarity, tightness or brief discomfort is common, particularly when nerves cause the pelvic floor muscles to tense. Sharp or significant pain is not normal even the first time, and is usually a sign of too little arousal time, too little lubrication, or going too fast. Slowing right down and using lubricant resolves most first-time discomfort.
When should I see a doctor about painful sex?
NHS guidance is that pain during sex should always be checked, whether it happens once or repeatedly. See someone promptly if there is bleeding after sex, unusual discharge or odour, fever with pelvic pain, sores, worsening pain, or pain that has started suddenly after sex was previously comfortable.
What is vaginismus?
Vaginismus is an involuntary tightening of the pelvic floor muscles that can make penetration painful or impossible. It is not deliberate and not a sign of not wanting sex. It responds well to treatment, typically pelvic floor physiotherapy, graded desensitisation, and sometimes psychological support where anxiety is maintaining the muscular response.
Can men experience painful sex?
Yes. Common causes include friction from insufficient lubrication, a tight foreskin or frenulum, infections such as balanitis or a urinary tract infection, prostatitis, and Peyronie's disease where scar tissue causes curvature and pain. All of these are treatable and should be assessed rather than tolerated.
Can more lubricant fix painful sex?
It resolves a meaningful share of cases, because friction and dryness are the single most common cause. If generous water-based lubricant and a much longer build-up do not fix it, the cause is something else and needs a clinical assessment rather than more product.
