Vulvar burning has several common causes, ranging from simple irritation to infections, skin conditions, and hormonal changes. Most of the time, the cause is identifiable and treatable. The key is recognizing what pattern your symptoms follow, because the combination of burning with other signs like discharge, skin changes, or pain during sex points toward different explanations.
Contact Irritation and Allergic Reactions
One of the most frequent and overlooked causes of vulvar burning is contact dermatitis, a reaction to something that touched the skin. Vulvar tissue is thinner and more absorbent than skin elsewhere on your body, making it especially vulnerable to chemicals you might not think twice about.
Common irritants include soaps and cleansers, sweat, urine, panty liners and menstrual pads, perfumed products, latex condoms, and even nail polish (transferred by touch). Some products marketed specifically for vulvar discomfort can actually make things worse. Benzocaine, the active ingredient in products like Vagisil, and neomycin, found in Neosporin, are known to trigger allergic reactions in this area. Preservatives in toilet wipes, emollients, and even prescribed steroid creams can also be culprits. Spermicides, douches, and lubricants containing chlorhexidine (found in some KY products and moist toilet wipes) round out the list of common allergens.
If your burning started after switching a product or using something new, irritation is a strong possibility. The fix is often straightforward: remove the offending product and protect the skin while it heals.
Yeast Infections, BV, and Trichomoniasis
Infections are another top cause, and the type of discharge you’re experiencing helps narrow things down considerably.
With a yeast infection, discharge is typically thick, white, and odorless. You may notice a white coating in and around the vagina. Burning and itching tend to be the dominant symptoms. Bacterial vaginosis (BV) looks different: discharge is grayish, sometimes foamy, and has a fishy smell. BV can also cause burning, though many people with BV have no symptoms at all.
Trichomoniasis, a sexually transmitted infection, produces thin or frothy discharge that can be clear, white, yellow, or green with a foul smell. Along with burning and soreness, trichomoniasis causes visible inflammation and swelling of the genital area, and it can cause pain during urination or sex and lower abdominal discomfort. Some people notice spots of blood in the discharge.
Genital herpes (HSV) is another STI that can cause vulvar burning, often before visible sores appear. The burning may feel like a tingling or raw sensation concentrated in one area, followed by small blisters or open sores that are painful to the touch.
Hormonal Changes and Menopause
If you’re in perimenopause, menopause, or postmenopause, declining estrogen levels can directly cause vulvar burning. Estrogen maintains the tissue lining of the vulva, vagina, urethra, and bladder through receptors present throughout these areas. It keeps the tissue thick, elastic, and well-moisturized by supporting collagen, blood flow, and the glands that produce natural lubrication.
When estrogen drops, the tissue loses collagen and fatty tissue, becomes thinner and less elastic, and receives less blood flow. The vulvar skin becomes pale and thin. This leads to vaginal and vulvar itching, burning, discomfort, and irritation, collectively known as genitourinary syndrome of menopause. The condition is progressive, meaning it tends to get worse over time without treatment. Breastfeeding and certain medications can also lower estrogen enough to cause similar symptoms in younger people.
Skin Conditions That Affect the Vulva
Lichen sclerosus is a chronic skin condition that causes discolored, blotchy, or wrinkled patches on the vulva. It produces itching, soreness, and burning along with fragile skin that bruises or tears easily. Some people develop blistering or open sores, and sex can become painful. Changes around the urethra can also occur. The exact cause isn’t fully understood, but it’s thought to involve an overactive immune response. Lichen sclerosus requires ongoing management because it can worsen over time and, in rare cases, increase the risk of vulvar skin cancer.
Vulvar eczema and psoriasis can also cause burning, redness, and irritation. These conditions tend to flare and improve in cycles, and they may be present on other parts of your body as well.
Vulvodynia: Burning Without a Clear Cause
Sometimes vulvar burning persists for months with no infection, no irritant, no skin condition, and no hormonal explanation. This is vulvodynia, defined as chronic vulvar pain lasting at least three months without an identifiable cause. About 3.8% of women experience vulvar pain at any given time, and nearly 10% will experience it at some point in their lives.
Vulvodynia can be generalized (affecting the entire vulvar area) or localized to a specific spot, most commonly the vestibule, the tissue around the vaginal opening. The pain can be constant or triggered by touch, pressure, or penetration. It’s a real, physical condition, not psychological, and is thought to involve changes in nerve signaling, pelvic muscle dysfunction, or both.
How the Cause Is Identified
A clinician will typically start with a visual examination of the vulva and vagina, looking for redness, skin changes, discharge, or sores. If infection is suspected, testing may include a vaginal swab to check for yeast, bacteria, or trichomoniasis, along with a pH test of vaginal fluid.
For persistent or unexplained burning, a cotton swab test is commonly used. A soft cotton swab is gently pressed against different areas of the vulva to map exactly where the pain is and how severe it is at each point. This helps distinguish between generalized and localized pain. A musculoskeletal evaluation may also be done to check for pelvic muscle tightness or other physical factors that can contribute to vulvar pain.
Relief While You Figure It Out
While you’re working toward a diagnosis, a few evidence-based steps can reduce irritation and soothe burning. Switch to washing with water only, or use an unscented, gentle cleanser. Avoid all perfumed products, wipes, douches, and panty liners in the vulvar area.
A lukewarm (not hot) baking soda soak can help with both itching and burning. Use 4 to 5 tablespoons of baking soda in a shallow bath, or 1 to 2 teaspoons in a sitz bath, and soak for 10 minutes up to three times a day. After bathing, you can apply a thin layer of a skin protectant to the vulva. Safe options include plain white petrolatum (Vaseline), extra virgin olive oil, coconut oil, vegetable oil, or zinc oxide ointment. These create a barrier that shields irritated tissue from further contact with sweat, urine, and friction.
Wear loose-fitting cotton underwear, and avoid sitting in wet clothing. If you suspect a specific product triggered the burning, stop using it immediately. Irritant-related burning often improves within days once the trigger is removed, while infections and hormonal or skin conditions typically need targeted treatment to fully resolve.