Vaginal soreness and itching usually come down to one of a few common causes: a yeast infection, bacterial vaginosis, contact irritation from everyday products, or hormonal changes. Most of these are highly treatable, and the specific pattern of your symptoms can help narrow down what’s going on.
Yeast Infections
A vaginal yeast infection is one of the most common reasons for itching and soreness. Most people with a vagina will get at least one in their lifetime, and many will have two or more. The hallmark symptom is intense itching and irritation of the vagina and the surrounding tissue (the vulva), along with a thick, white discharge that looks like cottage cheese and has little to no odor. You may also notice burning during sex or urination, redness, and swelling.
Yeast infections happen when a fungus that normally lives in small amounts in the vagina overgrows. Antibiotics are a well-known trigger because they wipe out the protective bacteria that keep yeast in check. Other common triggers include hormonal shifts, a weakened immune system, and high blood sugar.
Uncomplicated yeast infections can often be treated with over-the-counter antifungal creams or suppositories. A single prescription pill is another option. If your symptoms don’t clear up after finishing an OTC treatment, that’s a sign you may be dealing with something other than yeast.
Bacterial Vaginosis
Bacterial vaginosis (BV) is the most common cause of abnormal vaginal discharge worldwide, though interestingly, the majority of people who have it don’t notice any symptoms at all. When BV does cause symptoms, the pattern is distinct from a yeast infection. Instead of thick, white discharge, BV produces a thin, milky discharge that coats the vaginal walls and often carries a fishy smell. Itching and irritation can occur, but they tend to be milder than with yeast.
A key difference is vaginal pH. A healthy vagina sits below 4.5 on the pH scale, kept acidic by beneficial Lactobacillus bacteria that convert sugars into lactic acid. BV pushes that pH above 4.5, creating an environment where other bacteria thrive. If you’ve tried an OTC yeast treatment and it didn’t help, BV is a likely alternative explanation, and it requires a different type of treatment (antibiotics rather than antifungals).
Contact Irritation and Dermatitis
Sometimes the cause isn’t an infection at all. Vulvar dermatitis, an irritation or allergic reaction of the skin around the vagina, can produce itching, soreness, redness, and burning that closely mimics an infection. The list of potential irritants is surprisingly long:
- Soap, bubble bath, body wash, or shampoo that runs down during a shower
- Scented pads, panty liners, or tampons
- Laundry detergent or dryer sheets
- Synthetic underwear (especially nylon)
- Douches, deodorant sprays, or perfume
- Spermicides
- Toilet paper (especially scented or colored varieties)
- Tea tree oil and other “natural” topical products
If your symptoms started after switching a product, that’s a strong clue. Removing the irritant is often enough to resolve the problem within days. Switching to fragrance-free, dye-free products and wearing cotton underwear can prevent recurrences.
Trichomoniasis
Trichomoniasis is a sexually transmitted infection caused by a parasite, and it can look a lot like BV or a yeast infection at first glance. Symptoms include itching, burning, redness, soreness, and discomfort when urinating. The discharge can be clear, white, yellowish, or greenish, and it often has a fishy smell. The greenish tint and thin, increased-volume discharge are the features that most distinguish it from yeast. Trichomoniasis requires a specific prescription treatment, so it won’t respond to OTC antifungal products.
Low Estrogen and Vaginal Atrophy
If you’re approaching or past menopause, breastfeeding, or have had your ovaries removed, low estrogen may be the cause. At least half of people entering menopause develop symptoms of vaginal atrophy. Without adequate estrogen, the vaginal lining becomes thinner, drier, less stretchy, and more easily irritated. The vaginal canal can also narrow and shorten, and normal lubrication drops. The acid balance shifts, which makes the tissue more vulnerable to irritation and infection.
Cancer treatments that affect hormone levels can cause the same changes in younger people. The soreness from vaginal atrophy tends to be persistent rather than coming and going, and it often worsens with sexual activity. Prescription estrogen therapy applied locally to the vaginal area is the most effective treatment.
How to Tell What’s Causing Your Symptoms
The pattern of discharge is your most useful clue at home. Thick, white, odorless discharge that looks like cottage cheese points toward yeast. Thin, grayish or milky discharge with a fishy smell suggests BV. Greenish or yellowish, thin, fishy-smelling discharge raises the possibility of trichomoniasis. Soreness with dryness and no unusual discharge, especially around menopause, points to hormonal changes. Itching with no discharge at all, particularly if it started after a product change, suggests contact irritation.
These patterns are helpful but not foolproof. A few situations call for a professional evaluation rather than self-treatment: if this is your first time experiencing these symptoms, if you have fever, chills, or pelvic pain, if you’ve had a new sexual partner, if you’ve already tried OTC treatment without improvement, or if you notice an especially strong or unpleasant odor. A clinician can check your vaginal pH, examine a sample under a microscope, and test for specific infections to give you a clear answer.
Protecting Your Vaginal Microbiome
The vagina is largely self-cleaning. Lactobacillus bacteria produce lactic acid that keeps the pH low and crowds out harmful organisms. The single most important thing you can do to protect this system is to avoid douching. Douching disrupts the bacterial balance and is consistently linked to higher rates of BV and other infections.
Beyond that, practical steps include using unscented soap only on the external skin (never inside the vaginal canal), choosing cotton underwear, and avoiding sitting in wet swimsuits or sweaty clothes for long periods. If you’re prone to yeast infections after taking antibiotics, some evidence supports taking a probiotic containing Lactobacillus rhamnosus and Lactobacillus reuteri alongside antibiotic therapy to reduce recurrence, though the evidence is still preliminary.