Vaginal and vulvar itching is almost always caused by one of a handful of common, treatable conditions. The most likely culprits are yeast infections, bacterial vaginosis, contact irritation from products you use every day, or hormonal changes. In most cases, figuring out which one you’re dealing with comes down to paying attention to your discharge, any odors, and what’s recently touched your skin down there.
Yeast Infections: The Most Common Cause
Yeast infections account for roughly two-thirds of all diagnosed vaginal infections. They happen when a type of fungus called Candida, which normally lives in the vagina in small amounts, overgrows. This can be triggered by antibiotics (which kill off the protective bacteria keeping yeast in check), high blood sugar, a weakened immune system, hormonal shifts from pregnancy or birth control, or simply wearing tight, non-breathable clothing for too long.
The telltale sign is a thick, white, cottage cheese-like discharge that usually doesn’t smell. The itching tends to be intense and constant, often with burning, redness, and swelling around the vulva. You might also feel a stinging sensation when you pee or during sex.
Over-the-counter antifungal treatments work well for most yeast infections. Both miconazole and clotrimazole are widely available, and clinical cure rates for both are around 98 to 99%. Miconazole has a slightly lower failure rate (about 1.2% compared to nearly 6% for clotrimazole in one study), and it’s available as a single-dose treatment, which is more convenient than multi-day options. If you’ve had yeast infections before and recognize the symptoms, treating at home is reasonable. If it’s your first time, or if symptoms don’t clear up within a week, it’s worth getting checked to confirm the diagnosis.
Bacterial Vaginosis
Bacterial vaginosis, or BV, is the second most common vaginal infection, responsible for about a third of diagnosed cases. It’s not a true infection in the way a cold is. Instead, it’s an imbalance: the normal, healthy bacteria in your vagina get outnumbered by other types. Douching, new sexual partners, and scented products can all tip the balance.
The key difference from a yeast infection is the discharge. With BV, discharge is thinner, white or grayish, and has a noticeable fishy smell that often gets stronger after sex. The itching is usually milder than with a yeast infection. BV requires a prescription to treat, so an OTC antifungal won’t help here. If your discharge smells fishy, that’s a strong signal to see a provider rather than reaching for yeast infection cream.
Irritation From Everyday Products
Sometimes itching has nothing to do with an infection. The vulvar skin is thinner and more sensitive than the skin on the rest of your body, which makes it especially reactive to chemicals and friction. This type of irritation, called contact dermatitis, can look and feel a lot like an infection but won’t come with unusual discharge or odor.
Harvard Health identifies a long list of common irritants: soap, bubble bath, shampoo and conditioner that rinse down in the shower, scented detergent, adult or baby wipes, panty liners and their adhesives, douches, spermicides, lubricants, perfume, talcum powder, deodorants, and scented toilet paper. Even nylon underwear and chemically treated clothing can cause problems. Your own sweat and urine can also irritate the area if moisture sits against the skin for too long.
Some products contain specific allergens that cause a more intense reaction. Fragrances are among the most common triggers. Propylene glycol, a preservative found in many personal care products, is another. Latex in condoms and diaphragms causes allergic reactions in some people. Even tea tree oil, which some people use as a “natural” remedy, is a known vulvar allergen. If your itching started after switching to a new soap, detergent, lubricant, or brand of pads, the product itself is likely the problem.
Hormonal Changes and Menopause
Estrogen plays a major role in keeping vaginal tissue thick, lubricated, and resilient. When estrogen drops, particularly during and after menopause, the vaginal lining thins out significantly. Connective tissue breaks down, elasticity decreases, and the tissue becomes more fragile and prone to tiny tears and irritation. The vagina also becomes less acidic (its normal pH of 3.8 to 4.5 can rise above 4.5 after menopause), which makes infections more likely.
An estimated 10 to 40% of postmenopausal women experience symptoms from these changes, including itching, dryness, burning, and discomfort during sex. This isn’t limited to menopause, though. Breastfeeding, certain medications, and some cancer treatments can also lower estrogen levels enough to cause similar symptoms. If you’re in perimenopause or beyond and the itching came on gradually alongside vaginal dryness, low estrogen is a likely factor. Prescription estrogen creams or non-hormonal vaginal moisturizers can help.
Sexually Transmitted Infections
Trichomoniasis is the STI most strongly associated with vaginal itching. It’s caused by a parasite and often produces a frothy, yellowish-green discharge with a strong odor, along with irritation and sometimes pain during urination. It’s curable with a prescription antibiotic. Chlamydia, gonorrhea, and genital herpes can also cause itching, though they more commonly present with other symptoms first, like unusual discharge, painful urination, or sores.
If you’ve recently had a new sexual partner, had unprotected sex, or notice blisters or sores alongside the itching, getting tested is important. STIs won’t resolve on their own and can cause complications if untreated.
Chronic Skin Conditions
Less commonly, persistent vulvar itching that doesn’t respond to infection treatment or product changes can point to a skin condition. Lichen sclerosus is a chronic inflammatory condition that causes intense itching along with white, thinned patches of skin on the vulva. It can also cause pain and, over time, scarring that changes the shape of the vulvar tissue. It’s not an infection and isn’t contagious, but it does need ongoing management with a dermatologist or gynecologist. Eczema and psoriasis can also affect the vulva and cause stubborn, recurring itch.
How To Reduce Itching at Home
Regardless of the cause, a few changes can calm irritation and prevent it from coming back. The single most effective swap is switching to 100% cotton underwear. Cotton breathes, wicks moisture, and is far less likely to cause an allergic reaction than synthetic fabrics. Check the label carefully: some brands feel like cotton but contain synthetic fibers, and a small cotton crotch panel in otherwise synthetic underwear doesn’t offer the same protection. If you’re especially sensitive, plain white cotton is the safest choice.
Change your underwear at least once a day, more often if they get damp from sweat or discharge. Wash them with a hypoallergenic, fragrance-free, dye-free detergent. Running an extra rinse cycle can help remove detergent residue. Always wash new underwear before wearing them to remove chemicals from manufacturing and packaging.
At night, consider skipping underwear entirely. Wearing loose pajamas or boxer shorts allows airflow to the area, which helps healing, especially if you’re dealing with a yeast infection or general irritation. Beyond underwear, cut out anything scented that touches the vulva: switch to unscented soap (or wash with water only), unscented toilet paper, and skip wipes, douches, and feminine deodorant sprays. The vagina is self-cleaning. Products marketed to make it smell “fresh” are more likely to cause problems than solve them.
Signs That Need Medical Attention
Most vaginal itching resolves with the right OTC treatment or by removing the irritant. But certain symptoms signal something that needs professional evaluation: fever, pelvic or abdominal pain, blisters or open sores on the vulva, discharge with an unusual color or strong odor (especially if it’s new), or possible exposure to an STI. Itching that persists for more than a week despite treatment, keeps coming back, or gets progressively worse also warrants a visit. A provider can test for specific infections and check for skin conditions that need targeted treatment.