A painful bump on the vulva is almost always caused by one of a few common, treatable conditions: an infected hair follicle, a Bartholin’s gland cyst or abscess, an ingrown hair, or less commonly, a herpes outbreak or a chronic skin condition. Most of these resolve on their own or with simple treatment, but the type of bump, where it sits, and how fast it appeared can help you narrow down what’s going on.
Infected Hair Follicles (Folliculitis)
This is the most common reason for a painful bump on the vulva, especially on the outer lips (labia majora) where coarse hair grows. Folliculitis looks like a small, red, tender bump, similar to a pimple. It happens when bacteria get into a hair follicle, often triggered by shaving, waxing, tight clothing, or friction from exercise. You might see a white or yellowish head at the center.
Folliculitis bumps are usually isolated, meaning you’ll have one or maybe two, not a whole cluster. Mild cases clear up on their own within a week or so. Warm compresses several times a day can speed things along. If the bump doesn’t improve, your doctor may prescribe an antibiotic cream or gel. Oral antibiotics are typically reserved for severe or recurring infections.
Ingrown Hairs
Ingrown hairs feel a lot like folliculitis and often get mistaken for it. The difference is that an ingrown hair forms when a hair curls back into the skin instead of growing outward, creating a firm, painful bump that can become red and inflamed. They’re especially common after shaving or waxing.
Like folliculitis, ingrown hairs appear as single, isolated bumps rather than in groups. You can sometimes see the trapped hair beneath the skin’s surface. Warm compresses help soften the skin and encourage the hair to release. Resist the urge to squeeze or dig at it, which can introduce bacteria and make things worse.
Bartholin’s Gland Cyst or Abscess
If the bump is lower down, near the vaginal opening on one side, it could involve a Bartholin’s gland. These two small glands sit on either side of the vaginal entrance and produce lubricating fluid. When the duct of one gland gets blocked, fluid backs up and forms a cyst, which feels like a round, smooth lump. About 2% of women develop one at some point in their lives.
A Bartholin’s cyst on its own may not hurt much. The real pain starts if it becomes infected and turns into an abscess. This can happen quickly, sometimes within just a few days. The area becomes hot, swollen, red, and intensely tender. Sitting, walking, and sexual activity can all become painful. Some people also notice vaginal discharge or a feeling of pressure.
Small, non-infected cysts sometimes respond to warm soaks. Sitz baths at around 104°F (40°C) for 15 to 20 minutes, repeated three to four times a day, can encourage the gland to drain on its own. An abscess, however, usually needs to be drained by a healthcare provider. If the lump grows rapidly, feels hot, contains visible pus, or you develop a fever, those are signs the infection is worsening and needs prompt attention.
Herpes (HSV) Lesions
Genital herpes causes a distinctive pattern that sets it apart from other vulvar bumps. Instead of a single firm lump, herpes typically produces a cluster of small, blister-like sores filled with clear fluid. These blisters are tender to the touch and eventually break open into shallow, painful ulcers before crusting over and healing.
A first outbreak is usually the most painful and may come with flu-like symptoms: body aches, swollen lymph nodes in the groin, and sometimes fever. Recurrent outbreaks tend to be milder and shorter. If what you’re seeing looks like a group of tiny blisters rather than a single pimple-like bump, herpes is worth considering, and a healthcare provider can confirm the diagnosis with a swab test taken while the sores are still open.
Hidradenitis Suppurativa
If you keep getting painful bumps in the same general area, particularly in the groin folds, inner thighs, or around the vulva, you may be dealing with a chronic skin condition called hidradenitis suppurativa (HS). In its early stages, HS looks a lot like acne or recurring boils, which makes it easy to dismiss or misdiagnose.
The key difference is the pattern. HS bumps come back repeatedly, often in areas where skin rubs together. Over time, they can form deep, painful nodules that may drain thick fluid or pus. There’s no single test for HS. Diagnosis is based on what the bumps look like, where they appear, and whether they keep returning. If you’ve been getting “boils” in your groin area for months, it’s worth bringing that history up with your doctor so they can evaluate the pattern rather than treating each bump as a one-off event.
How to Find Relief at Home
For most painful vulvar bumps, the first-line approach is the same regardless of the cause: warm soaks and gentle care. A sitz bath (soaking just your pelvic area in warm water) at around 104°F for 15 to 20 minutes is one of the most effective things you can do. Aim for three to four times a day when you’re dealing with active pain or swelling. You can use a shallow basin that fits over your toilet seat or simply fill a bathtub with a few inches of warm water.
Avoid squeezing, popping, or picking at the bump. Wear loose, breathable cotton underwear. If friction from clothing seems to be making it worse, a simple barrier like petroleum jelly over the area can help. Over-the-counter pain relievers can take the edge off while you wait for things to improve.
Signs That Need Medical Attention
Most vulvar bumps are minor and resolve within a week or two. But certain changes signal that it’s time to get evaluated sooner rather than later:
- Rapid growth: A bump that gets significantly bigger and more painful within hours or days.
- Fever or feeling unwell: Systemic symptoms suggest the infection may be spreading beyond the skin.
- Visible pus or foul-smelling discharge: Signs of a developing abscess that likely needs drainage.
- Heat and intense redness: The area around the bump is hot to the touch, swollen, and deeply red (on darker skin tones, this may appear more purple or feel noticeably warmer rather than visibly red).
- A bump that won’t go away: Any lump that persists for several weeks, doesn’t respond to home care, or changes in color, shape, or size should be examined. A biopsy is sometimes needed to rule out less common causes.
A single painful bump after shaving is rarely anything to worry about. But when bumps recur, grow quickly, or come with fever, getting a clear diagnosis lets you move past the guessing and toward the right treatment.