Bumps on or around the vulva are extremely common, and the most likely cause is folliculitis, an infection or irritation of the hair follicles that dot the skin in that area. Because the vulvar skin has dense hair follicles, stays warm and moist, and frequently encounters friction from clothing, grooming, and sweat, it’s one of the most bump-prone areas on the body. In most cases, these bumps are harmless and heal on their own, but certain features can signal something that needs medical attention.
Folliculitis: The Most Common Cause
Folliculitis happens when a hair follicle gets clogged or infected, producing a raised, red, pus-filled bump that looks and feels like a pimple. The usual culprit is Staphylococcus aureus, a type of bacteria that naturally lives on your skin. When bacteria get pushed into a follicle through friction, sweat, or a small nick from shaving, the follicle becomes inflamed. You’ll typically see a small bump (or cluster of bumps) that’s tender to the touch and may have a visible white or yellow center.
If the infection goes deeper into the follicle, it can become a boil, which is a larger, more painful lump that fills with pus over several days. Boils on the vulva tend to start as a firm, red swelling and gradually soften as pus collects inside. They can make sitting uncomfortable and may eventually drain on their own.
Ingrown Hairs and Shaving Irritation
If you shave, wax, or trim your pubic hair, ingrown hairs are a leading suspect. An ingrown hair forms when the tip of a growing hair curls back and pierces the surrounding skin instead of growing outward. Your body treats this like a foreign object, triggering inflammation that produces a red, raised, painful bump, sometimes with visible pus. Newer bumps tend to be red, while older ones often darken and leave behind a patch of discolored skin.
Several grooming habits make ingrown hairs more likely. Shaving against the direction of hair growth, using a dull blade, dry shaving without moisturizer, and pulling skin taut before shaving all increase the chance of hairs curling back into the skin. Multi-blade razors are particularly problematic: the first blade lifts the hair while the second cuts it, allowing the shortened hair to retract below the skin surface and grow inward. Waxing can also leave behind hair fragments beneath the skin that trigger the same inflammatory reaction. People with naturally curly hair are especially prone to ingrown hairs in the pubic area because the curved follicle shape encourages the hair to loop back into the skin.
Contact Dermatitis and Irritation
Sometimes the bumps aren’t related to hair follicles at all. Vulvar skin is thinner and more sensitive than skin elsewhere on the body, making it vulnerable to chemical irritants. Products that commonly trigger irritation and bump-like reactions include scented soaps, bubble bath, douches, perfume, laundry detergent, dryer sheets, scented pads or panty liners, spermicides, and even tea tree oil. Underwear made from synthetic materials like nylon can also trap heat and moisture against the skin, worsening the problem.
Contact dermatitis in this area typically looks like widespread redness, small raised bumps, or a rash rather than a single pimple. It often itches or burns. If bumps keep returning despite good grooming habits, an irritant in your routine may be the cause.
Bartholin Cysts
If the bump is deeper, larger, and located specifically near the lower part of the vaginal opening (around the 4 o’clock or 8 o’clock position), it may be a Bartholin cyst. The Bartholin glands sit on either side of the vaginal opening and produce moisture. When one of their ducts gets blocked, fluid backs up and forms a round, soft lump. Small Bartholin cysts are painless and you might only notice them as a slight asymmetry on one side of the vulva.
When a Bartholin cyst becomes infected, it turns into an abscess: swollen, red, very tender, and sometimes warm to the touch. An abscess can grow large enough to make sitting or walking painful. Unlike a surface pimple that resolves in a few days, a Bartholin abscess typically needs to be drained by a healthcare provider.
When a Bump Might Be an STI
Most vulvar bumps are not sexually transmitted infections, but a few STIs can mimic the appearance of a pimple, so it helps to know the differences.
- Genital herpes causes clusters of small, fluid-filled blisters (not solid pus-filled bumps) that break open, form shallow ulcers, and then scab over. Herpes sores are often painful, burn, or itch intensely, and the first outbreak may come with body aches and fever. Flare-ups recur over time.
- Genital warts (HPV) are small, flesh-colored, soft growths that can be flat or slightly raised. They’re usually painless and may appear in clusters with an irregular, cauliflower-like texture. Unlike a pimple, warts don’t contain pus and don’t resolve in a few days.
A regular pimple or ingrown hair is a single, raised bump with pus, often tender, that improves within a week or so. If bumps keep coming back in the same spot, appear in clusters of blisters, or look like fleshy growths rather than pimples, testing for STIs can rule out these possibilities.
What to Do (and What Not to Do)
Don’t squeeze or pop bumps in this area. The vulvar skin is rich with blood vessels and bacteria, and popping a bump can push bacteria deeper into the tissue or spread it to surrounding follicles, creating more bumps. It also increases the risk of scarring.
For a typical pimple or small boil, a warm compress is the simplest and most effective home treatment. Soak a clean washcloth in warm water, wring it out, and hold it against the bump for 10 to 15 minutes several times a day. The warmth increases blood flow, helps draw pus toward the surface, and encourages the bump to drain naturally. Most folliculitis bumps and small boils resolve within one to two weeks with this approach.
While the bump is healing, wear loose, breathable cotton underwear, avoid further shaving or waxing in the area, and keep the skin clean with a gentle, fragrance-free cleanser. Skip scented products, douches, and harsh exfoliants.
How to Prevent Vulvar Bumps
The single most effective prevention strategy is reducing friction and irritation to the hair follicles. If shaving is the trigger, the American Academy of Dermatology recommends several specific techniques: shave at the end of a shower when hair is softest, always use a moisturizing shaving cream, shave in the direction the hair grows rather than against it, and apply a cool, damp washcloth to the skin afterward. Use a single-blade razor rather than multi-blade cartridges, and replace blades frequently.
If you’re prone to recurring bumps, growing out your pubic hair (even partially) eliminates the primary cause of ingrown hairs. Trimming with scissors or a guarded electric trimmer instead of shaving keeps hair short without creating the sharp tips that curl back into skin. Switching to fragrance-free laundry detergent, unscented menstrual products, and cotton underwear can also reduce irritation for people whose bumps are driven by contact dermatitis.
Signs That Need Medical Attention
Most vulvar bumps are benign, but certain features warrant a visit to a healthcare provider. A bump that grows rapidly, doesn’t improve after two weeks, or keeps recurring in the same location should be evaluated. The same applies to bumps with irregular texture or changing color, lumps that feel deep and firm rather than soft, or any bump accompanied by spreading redness, fever, or swollen lymph nodes in the groin. A Bartholin abscess that’s large or very painful typically needs professional drainage. And any bump that looks more like a blister cluster, an open sore, or a fleshy growth rather than a standard pimple is worth having examined to rule out an STI or, in rare cases, a more serious skin condition.