Genital herpes sores on or around the vagina typically appear as small, fluid-filled blisters that are about 1 to 3 millimeters across. They often show up in clusters on the outer or inner lips of the vulva, and they progress through a predictable sequence: a red, swollen patch forms first, tiny blisters develop on that patch, the blisters break open into shallow painful sores, and then those sores scab over and heal. The entire process takes roughly 2 to 6 weeks during a first outbreak.
What the Sores Look Like at Each Stage
Before any visible sore appears, most people notice tingling, itching, or a burning sensation in the area. This warning phase can last up to 24 hours. During this time, you might see nothing at all, or you might notice a patch of reddened, slightly swollen skin on the vulva, inner thighs, or buttocks.
Within a day or two, small blisters form on or near that red patch. Each blister is tiny, often no bigger than 3 millimeters, and filled with clear or slightly cloudy fluid. They can appear alone but more commonly show up in a cluster of several blisters grouped together. The skin around them is usually red and inflamed.
The blisters are fragile. They break open fairly quickly, leaving behind shallow, wet, open sores (ulcers) with a raw, pinkish base. This is the most painful stage. The open sores may weep or ooze, and they can sting sharply during urination if they’re near the urethra. Eventually the sores dry out, form a yellowish or brownish scab, and heal without scarring.
Where Sores Commonly Appear
On the external genitalia, sores most often develop on the labia majora (outer lips), labia minora (inner lips), and the area around the clitoral hood. They can also appear on the perineum (the skin between the vaginal opening and the anus), the buttocks, and the upper thighs.
Sores can also develop internally, on the vaginal walls or the cervix. Internal sores aren’t visible, but they can cause unusual vaginal discharge and a general feeling of irritation or pressure. Herpes can also cause swelling and inflammation in the cervix, urethra, and rectum, which may lead to pain during urination or bowel movements even when no external sores are present.
First Outbreak vs. Later Outbreaks
A first outbreak is almost always the worst. It tends to produce more sores, more pain, and more widespread symptoms. Many people also experience flu-like symptoms during their first episode: fever, body aches, swollen lymph nodes in the groin, and fatigue. The sores themselves can take 2 to 4 weeks to fully heal.
Recurrent outbreaks are generally milder. They tend to involve fewer blisters in a smaller area, and the sores heal faster. The warning tingling or itching before sores appear becomes a more recognizable signal over time. That said, severity varies from person to person, and some people experience painful recurrences even after a mild initial episode.
Herpes Sores vs. Ingrown Hairs
This is one of the most common sources of confusion. Both can cause red, irritated bumps in the same area. The key differences come down to a few details:
- Ingrown hairs tend to look like raised pimples. They’re often firm, warm to the touch, and you can sometimes see a hair trapped at the center. They usually appear one at a time.
- Herpes sores tend to appear in clusters and look more like a scratch or raw, open area than a pimple. The blisters are softer, break easily, and the fluid inside is thin and watery rather than thick like pus.
If you’re shaving the bikini area regularly, ingrown hairs are common and usually nothing to worry about. But if you notice a cluster of small blisters that break open into painful shallow sores, particularly if you also feel tingling beforehand, that pattern is more consistent with herpes.
Herpes Sores vs. Syphilis Sores
Syphilis produces a very different type of sore called a chancre. A syphilis chancre is typically a single, firm, round sore with clean edges. Crucially, it’s painless, which is the opposite of herpes. Herpes lesions are usually multiple, soft, and painful. However, both infections can sometimes look atypical, and visual inspection alone isn’t reliable enough to distinguish between them. Testing is the only way to confirm which infection is present.
How Herpes Is Confirmed
If you have an active sore, a healthcare provider can swab it for testing. The two main options are a viral culture and a PCR (polymerase chain reaction) test. PCR testing is more sensitive, picking up the virus in cases where a culture might miss it. In one comparison study, PCR detected herpes in 36 out of 100 samples while culture only caught 32. The swab works best when the sore is fresh and still has fluid in it. Once sores have scabbed over, the chance of getting an accurate swab result drops significantly.
Blood tests can also detect herpes antibodies, but they tell you whether you’ve been exposed to the virus at some point, not whether a specific sore is caused by herpes. For identifying what’s happening with a current sore, the swab test during an active outbreak is the most useful approach.
Symptoms You Might Not Expect
Not everyone with genital herpes gets the classic blisters. Some people experience sores so mild they look like a small paper cut, a patch of irritated skin, or a single crack in the skin fold. Others have no visible sores at all and only notice itching, burning during urination, or unusual discharge. This is part of why herpes is so frequently undiagnosed: the symptoms don’t always match the textbook description.
During a first outbreak especially, the pain and swelling can make urination very uncomfortable. Pouring warm water over the area while urinating can help reduce the sting from urine contacting open sores.