Men get herpes through direct skin-to-skin or skin-to-mucous-membrane contact with someone who carries the virus, whether or not that person has visible sores at the time. The herpes simplex virus (HSV) enters the body through mucous membranes or tiny cracks in the skin that are often invisible to the naked eye. This means transmission can happen during vaginal, anal, or oral sex, as well as through kissing or other close physical contact with an infected area.
The Two Types of Herpes That Affect Men
There are two strains of herpes simplex virus. HSV-1 traditionally causes oral herpes (cold sores), while HSV-2 is the classic cause of genital herpes. In practice, though, either type can infect either location. HSV-1 has become an increasingly common cause of new genital infections, largely through receiving oral sex from a partner with oral herpes. Many people with HSV-1 don’t think of cold sores as herpes or realize they can pass the virus to a partner’s genitals.
HSV-2 spreads primarily through genital-to-genital or genital-to-anal contact. Once either strain establishes itself, it travels along nerve pathways and settles into nerve cells near the base of the spine, where it remains for life. From there, it can periodically reactivate and travel back to the skin surface, causing outbreaks or shedding virus without any visible symptoms.
Why Symptoms Aren’t Required for Transmission
One of the most important things to understand about herpes is that it spreads even when an infected person looks and feels completely fine. This is called asymptomatic shedding: the virus makes its way to the skin surface and becomes transmissible without producing sores, tingling, or any other noticeable sign. Studies have found that people with genital HSV-2 shed the virus asymptomatically between 1% and 3% of the time. That percentage sounds small, but over months or years of sexual contact, it adds up considerably.
This is why many men who contract herpes are genuinely surprised. Their partner may not have known they carried the virus, or may have had no active outbreak at the time of transmission.
Transmission Risk by the Numbers
Research on long-term heterosexual couples where the woman has symptomatic genital HSV-2 shows an annual female-to-male transmission rate of roughly 3% to 4%. Broken down further, the risk per individual unprotected sexual encounter is about 1.7 transmissions per 1,000 acts. That means the per-act risk is low, but it accumulates over the course of a relationship.
Consistent condom use cuts that risk significantly. Protected sex drops the per-act rate to about 0.6 per 1,000 acts, a reduction of approximately 65%. However, condoms don’t eliminate the risk entirely because herpes can affect areas a condom doesn’t cover, including the upper thighs, lower abdomen, scrotum, and buttocks. The virus can shed from any of these areas, making skin-to-skin contact outside the condom’s coverage a potential route of transmission.
Where on the Body Men Get Infected
Genital herpes sores in men most commonly appear on or around the penis, scrotum, buttocks, thighs, or rectum. Oral herpes typically shows up on or around the lips, though it can appear inside the mouth or on the face. The virus doesn’t limit itself to one neat area. It tends to affect whatever patch of skin or mucous membrane it first entered through, plus the surrounding region served by the same nerve pathway.
This means a man can develop herpes sores in locations he wouldn’t necessarily associate with an STI, such as on the buttocks or upper thigh, which sometimes leads to misdiagnosis or delayed recognition.
What the First Outbreak Looks Like
After initial exposure, the incubation period ranges from 1 to 26 days, though most people develop symptoms within 6 to 8 days if they’re going to have a noticeable first outbreak at all. Many people never have obvious symptoms, which is part of why herpes spreads so effectively.
When a first outbreak does occur, it tends to be the most severe. One or more small blisters appear, often in a cluster, which then break open into shallow, painful sores before crusting over and healing. The whole process typically takes two to four weeks. Some men also experience flu-like symptoms during a first episode, including fever, body aches, and swollen lymph nodes in the groin. Before an outbreak begins, many people notice warning signs called prodromal symptoms: genital pain, tingling, or shooting discomfort in the legs, hips, or buttocks. These signals can appear hours or days before sores become visible.
Recurrent outbreaks are usually shorter and less painful than the first. Over time, most people experience fewer and fewer recurrences.
Can You Get Herpes From Objects or Surfaces?
The herpes virus can survive outside the body on dry surfaces for anywhere from a few hours to several weeks, with longer survival at lower humidity. However, the amount of virus that survives on a surface like a towel or toilet seat is generally far too small to cause infection. Herpes transmission in real-world settings requires the kind of direct, sustained contact that happens during sex or intimate skin-to-skin touching. Catching herpes from a toilet seat, shared cup, or gym equipment is not considered a realistic risk.
Why Herpes Often Goes Undiagnosed in Men
Many men carry herpes without knowing it. Some never have a recognizable outbreak. Others have symptoms so mild they mistake them for razor burn, jock itch, or an ingrown hair. Adding to the confusion, the CDC does not recommend routine herpes blood testing for people without symptoms. The reason is practical: current herpes blood tests have a relatively high false-positive rate compared to tests for infections like chlamydia or gonorrhea. A false positive can cause significant anxiety and relationship disruption over an infection the person doesn’t actually have.
Testing is generally reserved for people who have active sores that can be swabbed directly, or for specific clinical situations where a blood test result would meaningfully change care. If you have a sore you’re concerned about, getting it swabbed while it’s still fresh and fluid-filled gives the most reliable result. Waiting until sores have crusted over makes accurate testing harder.
How Men Can Lower Their Risk
No method completely eliminates the risk of herpes transmission, but several strategies reduce it substantially. Consistent condom use provides meaningful protection, cutting female-to-male transmission risk by roughly 65%. Daily antiviral medication taken by the infected partner further reduces transmission, and the two strategies together offer even greater protection.
Avoiding sexual contact during active outbreaks is important, since viral load is highest when sores are present. But because asymptomatic shedding accounts for a significant share of transmissions, abstaining only during visible outbreaks isn’t a complete solution. Open communication with sexual partners about herpes status, combined with condoms and antivirals when appropriate, represents the most effective overall approach to risk reduction.