Vaginal and vulvar itching is one of the most common gynecological complaints, and the cause ranges from something as simple as a new laundry detergent to an infection that needs treatment. Most cases fall into a few well-known categories: yeast infections, bacterial imbalances, contact irritation, hormonal changes, or sexually transmitted infections. Figuring out which one is behind your symptoms usually comes down to what else is going on, like the type of discharge, any odor, and whether there’s pain or burning alongside the itch.
Yeast Infections
A vaginal yeast infection is the most common reason for intense vulvar and vaginal itching. It happens when a type of fungus that naturally lives in the vagina grows out of control, usually after a course of antibiotics, during pregnancy, or when blood sugar is poorly managed. The hallmark sign is thick, white, odorless discharge that can look like cottage cheese. You may also notice a white coating in and around the vagina, along with redness, swelling, and burning during urination or sex.
If you’ve had a yeast infection before and recognize the symptoms, over-the-counter antifungal creams and suppositories (brands like Monistat or Vagistat) are a reasonable first step. But if you’re not sure it’s yeast, treating yourself with an antifungal can mask another problem. The vaginal pH with a yeast infection is typically normal, between 4.0 and 4.5, which is one way a clinician can help narrow things down during an exam.
Bacterial Vaginosis
Bacterial vaginosis (BV) develops when the balance of bacteria in the vagina shifts, allowing certain species to overgrow. It doesn’t always cause itching, and many people have no symptoms at all. When it does cause problems, the most distinctive feature is a thin, grayish, foamy discharge with a fishy smell. Vaginal pH rises above 4.5, which helps distinguish BV from a yeast infection.
BV won’t clear up with antifungal creams. It requires prescription antibiotics, typically taken orally or applied vaginally for five to seven days. If you’re treating what you think is a yeast infection but the itching isn’t improving, BV is one of the most likely alternatives.
Contact Irritation and Dermatitis
Vulvar skin is thinner and more sensitive than skin elsewhere on the body, which makes it especially vulnerable to chemical irritants. Many everyday products can trigger contact dermatitis, causing itching, redness, and burning without any infection at all. Common culprits include scented soaps, bubble bath, laundry detergent, dryer sheets, perfumed pads or panty liners, douches, spermicides, synthetic underwear (like nylon), scented toilet paper, and even tea tree oil.
If your itching started around the same time you switched a product, that’s a strong clue. The fix is straightforward: stop using the product and let the irritation resolve. In the meantime, washing with plain water (no soap on the inner vulva) and wearing cotton underwear can speed things along. A low-strength hydrocortisone cream applied to the outer vulva can temporarily calm the itch, though it won’t treat an infection and should not be inserted into the vagina. Plain aloe vera gel is another option for soothing the skin while it heals.
Sexually Transmitted Infections
Several STIs can cause genital itching, though itching is rarely the only symptom. Trichomoniasis, caused by a parasite, produces itching, burning, redness, and soreness of the genitals along with a thin, clear, yellowish, or greenish discharge that may smell fishy. Symptoms can range from barely noticeable irritation to severe inflammation. It requires prescription treatment and won’t respond to antifungal creams.
Genital herpes can also cause itching or tingling, particularly before or during an outbreak. Blisters or open sores on the vulva or vagina are a key distinguishing sign. If you notice sores, have been exposed to an STI, or are unsure about your risk, testing is the only way to rule these out.
Hormonal Changes
When estrogen levels drop, the vaginal lining becomes thinner, drier, and less elastic. Blood flow to the area decreases, and natural lubrication drops. All of this makes the tissue more fragile and prone to irritation and itching. This is most common during and after menopause, but it also happens during breastfeeding, after surgical removal of the ovaries, and sometimes with certain medications.
The condition progresses gradually, so the itching may build over weeks or months rather than appearing suddenly. It’s often accompanied by dryness, discomfort during sex, and a feeling of tightness. Vaginal moisturizers can help with mild symptoms. For more significant changes, estrogen-based treatments prescribed by a clinician can restore the tissue over time.
Itching During Pregnancy
Pregnancy increases the likelihood of yeast infections due to hormonal shifts, and those account for most pregnancy-related vaginal itching. But widespread itching that develops in the second or third trimester, particularly on the palms of the hands and soles of the feet, can signal a liver condition called intrahepatic cholestasis of pregnancy. In cholestasis, bile builds up in the bloodstream, causing intense itching that’s often worse at night.
Cholestasis carries risks for the baby, so it’s treated seriously. Diagnosis involves a blood test to measure bile acid levels, and treatment typically includes medication to lower those levels. Depending on how elevated the bile acids are, your provider may recommend delivering early, sometimes as early as 36 weeks. Itching that’s limited to the vulva and accompanied by discharge is much more likely to be a standard yeast infection, but any new, persistent itching during pregnancy is worth mentioning at your next appointment.
What a Diagnosis Looks Like
If you see a clinician for vaginal itching, the evaluation is usually quick and straightforward. They’ll ask about the character of any discharge, your sexual history, and any new products you’ve been using. A physical exam typically follows, during which a small sample of vaginal fluid may be collected. That sample is checked under a microscope and tested for pH. Yeast shows up on the slide with a specific preparation, BV produces characteristic “clue cells” and a fishy odor when a chemical is added, and trichomoniasis reveals moving parasites. These tests can be done in the office and often give results within minutes.
Habits That Protect Vulvar Health
A few daily practices can reduce your risk of irritation and infection. Wear underwear with a cotton crotch, and avoid tight-fitting pants when possible. Skip the douching entirely, as it washes away protective bacteria and disrupts the vaginal environment. Use unscented, uncolored toilet paper and avoid feminine sprays, deodorants, baby wipes, and talcum powder in the genital area. When washing, plain water is enough for the inner vulva. If you use soap on the outer area, choose something fragrance-free. Wipe front to back after using the bathroom, and opt for unscented pads or tampons without a plastic coating.
If you’re dealing with itching right now and aren’t sure of the cause, the safest first step is to eliminate potential irritants: switch to plain water for washing, stop using scented products near the area, and wear loose cotton underwear for a few days. If the itching is accompanied by unusual discharge, odor, sores, fever, or pelvic pain, or if it doesn’t improve within a few days, those are signs that something beyond simple irritation is going on and an exam will get you to the right treatment faster.