Genital itching is extremely common and usually caused by something treatable, like a yeast infection, an irritating product, or a shift in your body’s natural balance. The cause often depends on what other symptoms show up alongside the itch, particularly discharge, odor, skin changes, or pain. Here’s how to narrow down what’s going on.
Yeast Infections
A yeast infection is one of the most frequent causes of genital itching. About three out of four women will have at least one in their lifetime, and people with penises can get them too. The hallmark sign is a thick, white discharge that looks like cottage cheese, along with redness and swelling around the vulva or on the head of the penis. Some people also notice small cuts or tiny cracks in the surrounding skin, which makes the itching feel even more raw and uncomfortable.
Mild yeast infections sometimes clear on their own in about three days. Moderate to severe cases typically take one to two weeks to resolve, whether you use an over-the-counter antifungal cream or a prescription. OTC options usually come in three-day or seven-day courses. If your symptoms haven’t improved within a week or two, it’s worth getting checked out, because what feels like a stubborn yeast infection can sometimes be something else entirely.
Bacterial Vaginosis
Bacterial vaginosis (BV) happens when the normal balance of bacteria in the vagina shifts, allowing certain types to overgrow. The itch tends to be milder than a yeast infection, but the real giveaway is the discharge: thin, milky in consistency, and often accompanied by a fishy odor. That smell can get stronger after sex. BV won’t go away with antifungal creams, so if you’ve tried a yeast treatment and it’s not working, BV is a likely explanation. It requires a different type of treatment that a healthcare provider can prescribe after a quick exam.
Irritation From Everyday Products
Sometimes the itch has nothing to do with an infection. Contact dermatitis, basically an irritation or allergic reaction on the skin, is a surprisingly common culprit. The genital area is more sensitive to chemicals than the rest of your body, and products you wouldn’t think twice about can trigger burning, redness, or persistent itching.
Common offenders include soap, bubble bath, scented laundry detergent, dryer sheets, deodorant, douches, talcum powder, spermicides, and even tea tree oil. Dyes in underwear or toilet paper and nickel (found in some clothing snaps or piercings) can also cause reactions. If your itching started after switching a product or trying something new, that’s a strong clue. Switching to fragrance-free, dye-free alternatives and washing the area with plain water often resolves the problem within a few days.
Sexually Transmitted Infections
Several STIs can cause genital itching, and trichomoniasis is one of the most common. It produces a thin or frothy discharge that can be clear, white, yellow, or green, with a foul smell. You may also notice burning, soreness, or a change in the color of your genital skin. In men, trichomoniasis rarely causes symptoms, but when it does, it typically shows up as irritation or itching inside the penis.
Other STIs like chlamydia, gonorrhea, and herpes can cause itching too, though they usually come with additional symptoms like unusual discharge, painful urination, or visible sores. If you’ve had unprotected sexual contact and develop new itching, getting tested is the most reliable way to figure out the cause.
Pubic Lice
Pubic lice (often called crabs) cause intense itching in the genital area, especially at night. They spread through close physical contact. You can sometimes spot them with the naked eye: they’re broad, flat, crab-shaped, and about the size of a pencil tip. Look for tiny white or yellowish eggs (nits) attached to hair shafts, or the lice themselves clinging to pubic hair. They can also spread to other body hair like the chest, armpits, or even eyebrows. Over-the-counter lice treatments designed for pubic use are available, though washing all bedding and clothing in hot water at the same time is essential to prevent reinfection.
Itching Related to Hormonal Changes
Low estrogen is an overlooked cause of chronic genital itching, particularly in people going through menopause, breastfeeding, or recovering from childbirth. Estrogen helps maintain the vagina’s lubrication, elasticity, and thickness. When levels drop, the vaginal walls thin out, dry out, and become inflamed. The vulva loses moisture too, and many people notice irritation just from putting on underwear.
Cancer treatments and certain medications that block estrogen can cause the same effect. If your itching came on gradually and is accompanied by dryness, a tight or papery feeling, or discomfort during sex, hormonal changes are a likely factor. Vaginal moisturizers can help with day-to-day comfort, and a provider can discuss whether topical estrogen therapy makes sense for your situation.
Balanitis in People With Penises
Balanitis is inflammation of the head of the penis that causes itching, redness, and sometimes swelling or discharge. It most commonly affects uncircumcised individuals because the warm, moist environment under the foreskin encourages yeast and bacteria to grow. The most common cause is simply not cleaning regularly under the foreskin.
Other triggers include yeast infections, STIs like gonorrhea or chlamydia, sensitivity to soaps or chemicals, and skin conditions like eczema or psoriasis. Diabetes also increases the risk. A chronic form called Zoon’s balanitis is more common in uncircumcised people between the ages of 40 and 60. If you notice persistent redness or tightening of the foreskin that makes it hard to pull back, that’s worth getting evaluated.
Lichen Sclerosus
If the itching is persistent and you notice white, raised spots or patches on your genitals or around the anus, lichen sclerosus may be the cause. It’s a chronic skin condition that starts as small, shiny white spots and gradually merges into larger patches with a wrinkled texture, sometimes described as looking like parchment or tissue paper. The itching can be severe enough to cause scratching that leads to blisters, sores, and ulcers.
In people with penises, lichen sclerosus can cause tightening of the foreskin, making it difficult or impossible to retract. This condition doesn’t go away on its own and needs ongoing management to prevent scarring or other complications, so visible white patches on genital skin are a clear reason to see a provider.
Signs That Need Prompt Attention
Most genital itching resolves with simple treatment or by removing the irritant. But certain symptoms alongside itching signal something that needs faster evaluation: fever, pelvic or abdominal pain, blisters or open sores on the genitals, or possible exposure to an STI. These combinations can indicate an infection that needs specific treatment rather than an over-the-counter fix. Itching that persists for more than two weeks despite home treatment is also worth getting checked, since a provider can test for the less obvious causes that you can’t diagnose on your own.