Vaginal pain has dozens of possible causes, ranging from a simple irritant like scented soap to an underlying infection or chronic condition. About 16% of women experience chronic vulvar or vaginal pain at some point, so while the sensation can be alarming, it’s extremely common. The key to figuring out what’s going on is paying attention to where exactly the pain is, what triggers it, and what other symptoms come with it.
External Pain vs. Internal Pain
One of the most useful things you can do is figure out whether your pain is on the outside or the inside. The vulva is the external area, including the labia, clitoris, and the tissue surrounding the vaginal opening. The vagina is the internal canal. Pain on the outside often points to skin irritation, nerve-related conditions, or infections that affect surface tissue. Pain deeper inside is more commonly linked to infections, muscle tension, or hormonal changes affecting the vaginal lining.
External pain can affect all or part of the vulva, and it sometimes radiates to the inner thighs, the area around the anus, or the urethra. Internal pain tends to show up during sex, tampon insertion, or as a deeper ache in the pelvis. Both types can overlap, and many conditions cause a mix of the two.
Infections That Cause Vaginal Pain
Infections are one of the most common reasons for vaginal pain, and each type comes with its own pattern of symptoms.
Yeast Infections
A yeast infection typically causes intense itching and burning along with thick, white, clumpy discharge. Pain tends to be external, with soreness and swelling around the vulva, though sex and urination can also be uncomfortable. Over-the-counter antifungal treatments usually clear a yeast infection in 3 to 7 days. If symptoms don’t resolve or come back within two months, that warrants a follow-up visit.
Bacterial Vaginosis
BV produces a thin, grayish discharge with a noticeable fishy smell. It can cause burning during urination and mild irritation, though many women with BV have no pain at all. It’s not technically an STI but results from an imbalance in the natural bacteria of the vagina.
Sexually Transmitted Infections
Chlamydia and gonorrhea can both cause pain during sex, burning with urination, and lower abdominal or pelvic pain. Chlamydia may also cause lower back pain. Trichomoniasis produces itching, burning, redness, and soreness of the genitals along with a clear, white, yellowish, or greenish discharge that often has a fishy smell. Pain during sex and painful urination are common with trichomoniasis as well. These infections are treatable, but left alone they can spread to the upper reproductive tract and cause more serious problems.
Irritants and Contact Reactions
Vulvar skin is significantly more sensitive than skin elsewhere on the body, and everyday products are a surprisingly frequent cause of pain, burning, and itching. Known triggers include soap, bubble bath, shampoo, conditioner, deodorant, perfume, douches, talcum powder, laundry detergent, dryer sheets, scented pads or panty liners, tampons, spermicides, tea tree oil, and even toilet paper with dyes or fragrances. Synthetic underwear fabrics like nylon can also cause reactions.
If your pain started after switching a product or coincides with contact from something on that list, try eliminating it for a week or two. Washing the vulvar area with warm water only, wearing cotton underwear, and using unscented, dye-free products often resolves irritant-related pain without any other treatment.
Hormonal Changes and Vaginal Dryness
When estrogen levels drop, the vaginal lining becomes thinner, drier, less elastic, and more fragile. A healthy vaginal lining is several layers thick and naturally moist. With reduced estrogen, it can thin to just a few layers, losing its natural lubrication. This condition, called genitourinary syndrome of menopause, is most common during and after menopause, but it also occurs during breastfeeding, after certain cancer treatments, and with some hormonal medications.
Symptoms include vaginal dryness, burning, itching, pain during sex, light bleeding after sex, and a thin watery or sticky discharge. The vaginal canal can actually shorten and tighten over time. Frequent urinary tract infections and increased vaginal infections are also typical because the thinned tissue is less effective as a barrier. Unlike many menopause symptoms that eventually ease on their own, vaginal atrophy tends to get progressively worse without treatment.
Pelvic Floor Muscle Tension
The pelvic floor is a group of muscles that supports the bladder, uterus, and rectum. When these muscles stay contracted or continuously tighten involuntarily, it creates persistent or chronic pain. One well-known form of this is vaginismus, where the muscles around the vaginal opening clench reflexively, making penetration painful or impossible.
Pelvic floor tension can develop after childbirth, surgery, repeated infections, stress, or trauma. It often causes pain during and after sex, difficulty with tampon insertion, and a general aching or pressure in the pelvic area. The tricky part is that pain itself causes more muscle guarding, which creates more pain, forming a cycle that’s hard to break without targeted treatment like pelvic floor physical therapy.
Vulvodynia: Pain Without a Clear Cause
Vulvodynia is chronic pain in the vulvar area lasting at least three months with no identifiable cause. It’s defined as a diagnosis of exclusion, meaning doctors need to rule out infections, skin conditions, hormonal problems, and other treatable causes before assigning this label. The pain is most often described as burning, though it can also feel like stinging, rawness, or throbbing.
There are two main subtypes. Generalized vulvodynia affects the entire vulvar area, can be constant or intermittent, and isn’t necessarily triggered by touch. Localized vulvodynia, sometimes called vestibulodynia, centers on the tissue surrounding the vaginal opening and flares specifically with pressure, like sitting, tampon use, or sex. Doctors use a simple cotton swab test to distinguish between the two. Treatment typically involves a combination of approaches: topical treatments, pelvic floor therapy, nerve-targeted medications, and sometimes cognitive behavioral therapy to address the pain cycle.
Pelvic Inflammatory Disease
When bacterial infections like chlamydia or gonorrhea spread from the vagina and cervix into the uterus, fallopian tubes, or ovaries, the result is pelvic inflammatory disease. This causes deeper, more intense pain in the lower abdomen and pelvis, often accompanied by fever, unusual discharge, and pain during sex. PID can damage reproductive organs and affect fertility if not treated promptly.
Certain symptoms call for immediate medical attention: intense lower belly pain, smelly or discolored vaginal discharge, severe vomiting, or high fever. These can indicate PID or another serious infection that needs urgent treatment rather than a wait-and-see approach.
Narrowing Down Your Symptoms
Because so many conditions overlap in how they feel, paying attention to specifics helps enormously. Consider when the pain happens: is it constant, or does it only occur during sex, urination, or sitting? Note whether you have discharge and what it looks like. Think about whether anything changed recently, such as a new soap, a new sexual partner, a medication, or your menstrual cycle pattern.
Pain with unusual discharge and odor points toward infection. Pain that burns with no visible cause and has lasted weeks or months suggests vulvodynia or pelvic floor tension. Pain with dryness and thinning tissue, especially around menopause, points to hormonal changes. Pain that started after using a new product is likely contact irritation. Bringing these details to a healthcare provider makes it far easier to get an accurate diagnosis quickly rather than cycling through generic treatments.