Herpes sores most commonly appear on the lips, around the mouth, or on the genitals, but they can show up in a surprisingly wide range of locations. The specific sites depend on which type of herpes simplex virus you have (HSV-1 or HSV-2), where the virus first entered your body, and which nerve pathway it travels along. Understanding the full range of possible locations helps you recognize an outbreak, even when sores appear somewhere unexpected.
Oral Herpes: Lips, Mouth, and Face
Cold sores are the most recognizable sign of oral herpes, almost always caused by HSV-1. They typically form on or around the lips, especially along the outer edge where lip skin meets facial skin. This border is the most common single location for herpes outbreaks anywhere on the body.
Sores can also develop inside the mouth. The gums, tongue, and roof of the mouth (the hard palate) are all common sites, particularly during a first infection. These interior sores are often mistaken for canker sores, but herpes blisters tend to appear in clusters and are accompanied by a tingling or burning sensation before they break out. An estimated 3.8 billion people under age 50, roughly 64% of the global population, carry HSV-1.
Genital Herpes: More Than One Area
Genital herpes can appear across a wider zone than many people expect. In women, sores may develop on the outer vaginal lips (labia), inside the vagina, on the cervix, around the anus, and on the thighs or buttocks. In men, typical sites include the penis, scrotum, around the anus, and on the thighs or buttocks. Either HSV-1 or HSV-2 can cause genital herpes, though HSV-2 is responsible for the majority of recurring genital outbreaks.
Some genital outbreaks are internal and never visible on the skin’s surface. Sores on the cervix or inside the urethra can cause pain or unusual discharge without any obvious blisters you can see. This is one reason genital herpes often goes undiagnosed. Globally, about 520 million people aged 15 to 49 carry HSV-2, but only around 205 million of them have ever had a noticeable symptomatic episode.
Why Sores Appear on the Buttocks and Thighs
If you’ve had a genital herpes outbreak, sores can also show up on your lower back, buttocks, or upper thighs, and this catches a lot of people off guard. About 21% of people with a primary genital herpes infection develop sores at a nongenital site at some point. The lower back and legs are the most frequently affected areas outside the genitals.
This happens because of how the virus travels through your nervous system. After an initial infection, HSV retreats into nerve clusters near the base of the spine called the sacral ganglia. The same nerve roots that serve the genitals also branch out to the buttocks, lower back, and thighs. When the virus reactivates, it can travel down any of those branches, not just the one it originally used to enter. So a person whose first outbreak was on their genitals might have a recurrence on their buttock instead.
How Nerve Pathways Determine Outbreak Location
The reason HSV-1 favors the face and HSV-2 favors the genitals comes down to the specific nerve cells each virus prefers. HSV-1 reactivates most efficiently from the trigeminal ganglia, a nerve cluster near the jaw that serves the face, eyes, and mouth. HSV-2 reactivates more efficiently from the lumbar-sacral ganglia at the base of the spine, which serves everything below the waist, including the genitals.
Each virus type actually targets a different subtype of nerve cell within these clusters, which is why HSV-1 recurrences above the waist are far more common than HSV-2 recurrences in the same area, and vice versa. This doesn’t mean crossover is impossible. HSV-1 causes a growing share of new genital herpes cases, typically through oral sex. But when HSV-1 does infect the genitals, it tends to recur less frequently than HSV-2 would in the same location, and it sheds the virus less often between outbreaks.
Fingers, Hands, and Herpetic Whitlow
Herpes can infect the skin around your fingernails through any small cut or break in the skin. This is called herpetic whitlow, and it causes painful blisters near the fingernail that look distinctly different from a typical skin infection. The affected finger often swells, and the skin around the nail changes color, turning darker than your normal skin tone or shifting to a red-purple shade.
The infection typically follows a predictable pattern: tingling and pain come first, followed by blister formation, then crusting and healing over the course of one to two weeks. It usually affects just one finger but can spread to others. Herpetic whitlow was historically common in healthcare workers and dentists before routine glove use. It can also happen when someone with an oral outbreak touches a hangnail or paper cut.
Eyes and Ocular Herpes
HSV can infect nearly every tissue in the eye. The most common form, called herpes keratitis, affects the clear front surface of the eye (the cornea). It creates tiny branching sores on the corneal surface that an eye doctor can see with a specialized lamp. Left untreated, repeated episodes can scar the cornea, thin it out, and permanently reduce vision.
The virus can also cause inflammation deeper inside the eye, affecting the colored part of the eye (the iris) and the fluid-filled chamber behind it. Symptoms include eye redness, pain, light sensitivity, blurred vision, and sometimes a feeling like something is stuck in your eye. Ocular herpes is almost always caused by HSV-1 reactivating from the trigeminal ganglia, which has a branch running directly to the eye. Because the consequences can be serious, any unexplained eye pain combined with a history of cold sores is worth getting checked promptly.
What Herpes Sores Look Like vs. Other Conditions
Herpes blisters have some distinctive features, but they’re easier to confuse with other conditions than most people realize. Typical herpes lesions appear as clusters of small, fluid-filled blisters on a red base. They’re usually painful, and many people feel tingling, itching, or burning in the area a day or two before the blisters appear.
A syphilis sore (called a chancre) is usually a single, firm, painless ulcer, which is a key difference from herpes. Ingrown hairs and folliculitis tend to center around a hair follicle and look more like a pimple with a white head, while herpes blisters are thinner-walled and cluster together. That said, herpes can sometimes present as a single sore, a small crack in the skin, or irritation that looks like a rash. Visual inspection alone isn’t reliable for diagnosis, and testing (either a swab of an active sore or a blood test) is the only way to confirm it.
Shedding Without Visible Sores
One of the most important things to understand about herpes is that the virus can be active on the skin’s surface even when no sores are present. This is called asymptomatic shedding, and it’s how a large proportion of herpes transmissions happen. HSV-2 sheds intermittently from the genital area even in people who have never had a recognized outbreak. Shedding is most frequent during the first 12 months after acquiring HSV-2 and decreases over time, though it never stops entirely.
People who carry HSV-2 but have never had noticeable symptoms shed the virus about 50% less often than those who have had symptomatic outbreaks. HSV-1 genital infections shed less frequently still. This means herpes can effectively “show up” on the skin in a microscopic, invisible way, even between the visible outbreaks that most people think of as the only infectious periods.