Vaginal burning is most often caused by an infection, an irritant touching sensitive skin, or a hormonal change. It can range from a mild sting during urination to a persistent, raw sensation that lingers throughout the day. The cause matters because treatments are completely different depending on what’s behind it. Here’s how to sort through the most likely explanations.
Infections That Cause Burning
Three common vaginal infections can produce a burning sensation, and each one looks a little different.
Yeast infections happen when naturally occurring fungus in the vagina overgrows. The hallmark is thick, white, odorless discharge, sometimes with a white coating in and around the vagina. Burning and itching tend to be the dominant symptoms, and they often get worse with urination or sex. Yeast infections are not sexually transmitted, and over-the-counter antifungal treatments resolve most cases within a few days.
Bacterial vaginosis (BV) is the most common vaginal infection in women ages 15 to 44. It develops when the balance between helpful and harmful bacteria in the vagina shifts. The telltale sign is a grayish, foamy discharge with a fishy smell, though some people with BV have no noticeable symptoms at all. BV requires a prescription antibiotic, so an over-the-counter yeast treatment won’t help if this is actually the cause.
Trichomoniasis is a sexually transmitted infection caused by a parasite. It can produce itching, burning, soreness, pain during sex, and a clear, white, greenish, or yellowish discharge that often has a strong fishy odor. Painful urination is also common. Trichomoniasis is treated with a prescription antibiotic, and sexual partners need treatment too to prevent reinfection.
STIs With Similar Symptoms
Chlamydia and gonorrhea can both cause a burning sensation, though their symptoms sometimes overlap with less serious infections. Chlamydia often shows up as painful, burning urination and pain during sex. Gonorrhea can cause the same burning urination along with thick, cloudy, or bloody discharge, heavy menstrual bleeding, or bleeding between periods. Pelvic or stomach pain is another possible sign.
Both infections are treatable with antibiotics but can cause serious complications if left untreated, including damage to the reproductive system. They also frequently produce no symptoms at all, which is why testing is the only reliable way to rule them out, especially after unprotected sex or with a new partner.
Contact Irritants and Allergic Reactions
The vulva and vaginal opening are lined with delicate, absorbent tissue that reacts to chemicals far more easily than the skin on your arm or leg. A surprisingly long list of everyday products can trigger burning, itching, and irritation:
- Soap, bubble bath, shampoo, and conditioner that runs down during a shower
- Scented laundry detergent or dryer sheets
- Pads, panty liners, and tampons
- Douches, vaginal sprays, and deodorants
- Spermicides and certain lubricants
- Underwear made from synthetic materials like nylon
- Toilet paper with dyes or fragrance
- Tea tree oil and other “natural” remedies applied directly to the area
This type of irritation, called vulvar contact dermatitis, usually improves within a few days once you remove the offending product. If you recently switched soaps, detergents, or menstrual products and the burning started around the same time, that’s a strong clue. Switching to fragrance-free, dye-free products and wearing cotton underwear often resolves it without any medical treatment.
Hormonal Changes and Vaginal Dryness
Estrogen keeps vaginal tissue thick, elastic, and well-lubricated. When estrogen drops, the tissue thins out, dries, and becomes more fragile. This condition, sometimes called genitourinary syndrome of menopause, is a common and progressive cause of burning in people who have gone through menopause. The tissue can become so dry that tiny cracks and ulcerations develop, which is what creates that raw, stinging feeling.
Menopause isn’t the only trigger. Estrogen also dips during breastfeeding and at certain points in pregnancy, and some medications (including certain birth control formulations) can lower estrogen enough to cause dryness. If your burning came on gradually rather than suddenly, and you notice dryness or discomfort during sex, hormonal changes are a likely factor. Prescription estrogen applied locally to the vaginal area is one of the most effective treatments, though over-the-counter vaginal moisturizers can help with mild cases.
Chronic Burning Without a Clear Cause
Some people experience persistent vulvar burning that doesn’t match any infection, irritant, or hormonal issue. This is called vulvodynia, a chronic pain condition affecting the vulva. The burning can be constant or triggered by touch, sitting, or inserting a tampon. It lasts three months or longer, and standard tests for infection come back normal.
Diagnosing vulvodynia involves ruling out other causes first. A provider will typically do a pelvic exam, take samples to test for yeast and bacteria, and use a cotton swab to gently map which specific areas of the vulva are painful. Blood tests may check hormone levels, and if the skin looks unusual, a small biopsy can rule out skin conditions. Treatment varies and often involves a combination of approaches, including pelvic floor physical therapy, topical treatments, and nerve-targeting medications.
Skin Conditions Affecting the Vulva
Lichen sclerosus is a chronic skin condition that causes white, raised patches on the vulva or around the anus. These patches look thin and wrinkly, almost like parchment paper, and they cause itching, soreness, and burning. Over time, blisters and sores can develop from persistent scratching. Without treatment, the condition leads to scarring that can make sex, urination, and bowel movements painful. Lichen sclerosus is managed with prescription topical treatments that reduce inflammation and slow progression.
How to Tell What’s Causing Your Burning
A few details can help you narrow down the cause before you see a provider. Pay attention to when the burning happens. Burning only during urination points toward a urinary tract infection, an STI, or irritation at the vaginal opening. Burning during or after sex suggests dryness, an infection, or vulvodynia. Constant burning that doesn’t let up could signal a skin condition or chronic pain issue.
Discharge is another useful clue. Thick, white, odorless discharge leans toward yeast. Gray or foamy discharge with a fishy smell suggests BV. Green or yellow discharge with odor may indicate trichomoniasis. No unusual discharge at all, especially if the burning is external, points more toward an irritant, hormonal dryness, or a skin condition.
Certain situations call for a prompt medical visit: a fever or chills alongside vaginal symptoms, pelvic pain, burning that persists after finishing an over-the-counter yeast treatment, a new sexual partner or multiple recent partners, or your first-ever episode of vaginal burning where you’re unsure what’s going on. These scenarios need proper testing to identify or rule out infections that won’t resolve on their own.