Genital herpes typically starts with tingling or itching, then produces small blisters that break open into painful sores before healing over two to six weeks. Many people with the virus never develop noticeable symptoms at all, which is part of why it’s so common: over 520 million people worldwide carry HSV-2, the strain most associated with genital herpes, and another 376 million have genital infections caused by HSV-1.
What It Looks Like
The visible signs of genital herpes follow a consistent pattern. First, a patch of red, swollen skin appears on or near the genitals, anus, thighs, or buttocks. Small fluid-filled blisters form on that patch, sometimes in clusters. Within a few days, those blisters rupture and leave behind shallow, open sores that can be quite painful. The sores eventually scab over and heal completely, usually within two to six weeks for a first outbreak. Later outbreaks tend to be shorter and less severe.
Not everyone’s experience looks the same. Some people develop a single small sore they barely notice. Others get multiple clusters of blisters spread across a wider area. The location can vary too. While the genitals are the most common site, sores can appear on the inner thighs, buttocks, or around the anus.
What It Feels Like
Before any sores appear, many people experience what’s called a prodrome: warning sensations that signal an outbreak is starting. These include tingling, itching, burning, or a dull ache around the genitals. Some people feel shooting pain down the legs, hips, or buttocks, which happens because the virus lives in nerve tissue near the base of the spine. These warning signs can start up to 24 hours before blisters form.
Once sores develop, the primary sensation is pain, especially during urination if sores are near the urethra. The first outbreak is almost always the worst. It can come with flu-like symptoms including fever, body aches, and swollen lymph nodes in the groin. Repeat outbreaks rarely produce these whole-body symptoms and typically heal faster.
HSV-1 vs. HSV-2 Genital Infections
Two related viruses cause genital herpes. HSV-2 is the one traditionally associated with genital infections and tends to recur more often. HSV-1, which most people think of as the “cold sore” virus, increasingly causes genital infections too. This happens when HSV-1 is transmitted from the mouth to the genitals during oral sex. As fewer children acquire HSV-1 during childhood (through casual contact like shared cups or kisses from family), more adults encounter it for the first time through sexual contact, and genital HSV-1 infections have been rising as a result.
The practical difference: genital HSV-1 tends to recur less frequently than genital HSV-2. Some people with genital HSV-1 have one outbreak and never have another. Those with HSV-2 are more likely to have repeated episodes, though the frequency varies widely from person to person and generally decreases over the years.
When Symptoms First Appear
After exposure to the virus, it typically takes 2 to 12 days for the first symptoms to show up. This first episode is usually the most intense, with more sores, more pain, and a longer healing time compared to any future outbreaks. Some people don’t develop symptoms for weeks, months, or even years after infection, which makes it difficult to pinpoint exactly when or from whom they acquired the virus.
A significant number of people carrying HSV-2 never develop recognizable symptoms. They can still transmit the virus, because the skin can release viral particles (a process called shedding) even when no sores are visible. Asymptomatic shedding is more frequent in the months after a person first acquires the infection and is more common with HSV-2 than HSV-1.
How It Spreads
Genital herpes spreads through vaginal, anal, or oral sex with someone who has the infection. The virus transmits through direct skin-to-skin contact with an active sore or with skin that is shedding the virus without any visible symptoms. You can get genital herpes from a partner who has no idea they’re infected.
Condoms reduce the risk but don’t eliminate it, because the virus can shed from skin that a condom doesn’t cover. Research has shown that consistent condom use significantly lowers the risk of transmission to women, though the protective effect for men is less clear, likely because more of the exposed skin in men falls outside the area a condom covers.
How It’s Diagnosed
If you have active sores, the most reliable test is a PCR swab, which detects viral DNA directly from the lesion. This test picks up the virus about 80% to 90% of the time and returns results in roughly a day. Viral culture (growing the virus from a swab in a lab) is highly specific, meaning a positive result is almost certainly correct, but it only catches about 50% of true infections and takes three to seven days.
If no sores are present, a blood test can detect antibodies your immune system has produced against HSV-1 or HSV-2. These type-specific blood tests are 96% to 100% sensitive for HSV-2 and take one to two weeks for results. One important caveat: antibodies take time to develop after a new infection, so a blood test done too soon after exposure may come back negative even if you’re infected. HSV-1 antibody tests are also slightly less accurate than HSV-2 tests.
Treatment and What to Expect
Antiviral medications don’t cure genital herpes, but they shorten outbreaks and reduce their severity. For a first episode, treatment typically runs 7 to 10 days and can be extended if sores haven’t fully healed. Starting medication early, ideally as soon as you notice prodromal tingling, makes it most effective.
People who experience frequent outbreaks can take a daily antiviral pill as suppressive therapy. This approach reduces the number of outbreaks per year and also lowers the risk of transmitting the virus to a sexual partner. Long-term daily use has been studied extensively and is considered safe. Many people find that outbreaks become less frequent over time even without daily medication, and some eventually stop having noticeable episodes altogether.
Rare but Serious Complications
For most people, genital herpes is a manageable skin condition. In rare cases, particularly during a severe first outbreak, the virus can cause complications. Inflammation of the rectum (proctitis) can occur with anal infections. In very uncommon cases, the virus can affect the nervous system, causing meningitis or problems with bladder function that require medical attention. These complications are most likely during a primary infection in someone with a weakened immune system and are uncommon in otherwise healthy adults.