A burning sensation in or around the vagina is almost always a sign of irritation, whether from an infection, a chemical trigger, hormonal changes, or a chronic pain condition. It’s one of the most common gynecological complaints, and the cause is usually treatable once identified. The key to figuring out what’s behind it is paying attention to accompanying symptoms like discharge, odor, skin changes, and whether the burning is constant or only happens during specific activities.
Yeast Infections and Bacterial Vaginosis
These two infections are the most frequent culprits behind vaginal burning, but they feel and look quite different. A yeast infection produces thick, white, cottage cheese-like discharge and significant itching, especially in younger women. The burning tends to flare during urination. Most women don’t notice an odor with a yeast infection.
Bacterial vaginosis (BV), on the other hand, typically does not cause burning or itching. Its hallmark is a thin, gray or yellowish discharge with a strong, fishy odor. If you’re experiencing burning as your primary symptom, BV is less likely than a yeast infection, though it’s still worth ruling out since both infections require different treatments. Over-the-counter antifungal creams cure more than 80% of yeast infections, and one-day, three-day, and seven-day regimens all deliver the same total dose of medication. BV requires a prescription antibiotic.
One important note on those vaginal anti-itch creams sold alongside antifungals: they contain ingredients like benzocaine and hydrocortisone that temporarily numb minor itching but have no antimicrobial effect. They can mask symptoms without resolving the underlying infection, and in some women they actually make irritation worse.
Sexually Transmitted Infections
Several STIs cause burning that can feel identical to a yeast infection, which is why self-diagnosing isn’t always reliable. Chlamydia causes painful, burning urination along with vaginal discharge and pain during sex. Gonorrhea produces similar burning urination plus thick, cloudy, or bloody discharge. Both can be present with minimal symptoms, so testing is the only way to confirm or rule them out.
Trichomoniasis is a parasitic infection that causes vaginal burning, soreness, and irritation along with a strong fishy odor and clear, white, greenish, or yellowish discharge. It’s often confused with BV because of the odor, but the burning and soreness set it apart.
Genital herpes causes a different pattern. You’ll typically see small red bumps, blisters, or open sores on or around the vulva. The burning with herpes often comes from urine passing over these ulcers rather than from internal vaginal irritation. If you notice visible sores alongside the burning, herpes is a strong possibility.
Products That Irritate the Vulva
Sometimes the burning has nothing to do with infection. Contact dermatitis of the vulva is inflammation triggered by a chemical or physical irritant, and the list of potential triggers is surprisingly long: soap, bubble bath, shampoo, conditioner, deodorant, perfume, douches, talcum powder, laundry detergent, dryer sheets, pads, panty liners, tampons, spermicides, tea tree oil, toilet paper, synthetic underwear (especially nylon), and dyes. Even food preservatives and nickel can cause reactions in sensitive skin.
If the burning started after you switched to a new product, that’s a strong clue. Vulvar skin is thinner and more permeable than skin elsewhere on your body, so it reacts to chemicals that your arms or legs would tolerate without issue. Switching to fragrance-free, dye-free products and wearing cotton underwear often resolves the problem within days. If it doesn’t, the cause is likely something else.
Hormonal Changes and Vaginal Dryness
Declining estrogen levels cause the vaginal lining to become thinner, drier, less elastic, and more fragile. This condition, sometimes called genitourinary syndrome of menopause, produces a chronic burning or drying sensation that can be present all the time or mainly during sex. It’s one of the most common causes of vaginal burning in women over 45, but it doesn’t only affect people in menopause.
Estrogen can drop during perimenopause (the years leading up to menopause), while breastfeeding, and after surgical removal of both ovaries. If you’re in any of these categories and the burning came on gradually alongside increasing dryness, thinning tissue is a likely explanation. Prescription estrogen therapy applied locally to the vaginal area is the standard treatment, though moisturizers designed for vaginal use can help with milder symptoms.
Vulvodynia: Chronic Burning With No Obvious Cause
If you’ve been tested for infections, eliminated irritants, and your hormone levels are normal, but the burning persists for three months or longer, vulvodynia may be the explanation. It’s defined as chronic vulvar pain lasting more than three months with no identifiable cause. It is a diagnosis of exclusion, meaning doctors arrive at it after ruling out everything else.
Vulvodynia affects an estimated 3% to 7% of reproductive-aged women, and by age 40, roughly 7% of American women will have experienced symptoms consistent with it. Despite how common it is, it’s frequently underdiagnosed because many women assume the burning must be from recurring infections.
There are two main patterns. Some women experience constant, unprovoked burning that’s present throughout the day regardless of touch or activity. Others are pain-free most of the time but experience significant burning or stinging when pressure is applied to the vaginal opening, such as during sex, tampon insertion, or even sitting for long periods. Treatment typically involves a combination of pelvic floor physical therapy, topical medications, and sometimes nerve-targeting oral medications. It often takes time and trial-and-error to find the right approach, but most women see improvement.
Skin Conditions That Affect the Vulva
Lichen sclerosus is a chronic skin condition that causes smooth, discolored patches on the vulva along with soreness, burning, itching, and fragile skin that bruises or tears easily. The affected skin may appear white, wrinkled, or blotchy. It can also cause painful sex and changes around the urethra. Lichen sclerosus requires prescription treatment, usually a strong topical steroid, and ongoing monitoring because untreated cases carry a small risk of skin changes over time.
If your burning is accompanied by visible changes to the skin’s color or texture, or if the skin around your vulva tears or bleeds easily, a skin condition rather than an infection is the more likely cause.
How to Narrow Down the Cause
The pattern of your symptoms tells you a lot. Burning only during urination points toward a yeast infection, UTI, or STI. Burning during or after sex suggests hormonal dryness, vulvodynia, or an STI. Constant burning with no trigger is more typical of vulvodynia or contact dermatitis. Burning with unusual discharge narrows things toward infection.
If you’re also running a fever, experiencing chills, or having pelvic pain, those are signs that infection may have spread beyond the vagina and need prompt medical evaluation. The same is true for any new sores, blisters, or open ulcers.
For burning that started recently and comes with discharge, an over-the-counter antifungal is a reasonable first step if you suspect a yeast infection. But if the burning doesn’t resolve within a week, returns repeatedly, or is accompanied by odor, colored discharge, sores, or pelvic pain, testing is the fastest path to the right treatment.