Learn about
Herpes
Herpes is caused by herpes simplex virus — HSV-1 (primarily oral herpes) and HSV-2 (primarily genital herpes), though both types can infect either site. It is among the most prevalent infections globally: the CDC estimates approximately 1 in 6 Americans aged 14–49 has genital HSV-2, and HSV-1 seroprevalence exceeds 50% in adults. Herpes is a lifelong condition with no cure, but it is manageable with antiviral medication, and most people with herpes live with minimal or no symptoms. The stigma around herpes is substantially worse than the clinical reality of the infection.
Herpes Symptoms
The majority of people with herpes — both HSV-1 and HSV-2 — never have a recognisable outbreak. The first outbreak, if symptomatic, occurs 2–12 days after exposure and may include painful blisters or sores on or around the genitals, buttocks, or thighs (HSV-2) or mouth and lips (HSV-1), plus flu-like symptoms including fever and swollen lymph nodes. Subsequent outbreaks are typically milder and shorter. Many people attribute mild symptoms — paper cuts, chafing, irritation — to something else without realising they are herpes outbreaks. Asymptomatic viral shedding (transmitting the virus without visible sores) is responsible for the majority of herpes transmission.
Herpes Transmission
Herpes spreads through direct skin-to-skin contact with an infected area, including during oral, genital, and anal sex, and through genital-to-genital contact without penetration. HSV-1 is commonly transmitted through oral contact (kissing) and can be passed to the genitals during oral sex. Crucially, herpes can be transmitted even when no visible sores are present — this is asymptomatic shedding, and it accounts for the majority of new transmissions. Condoms reduce transmission risk substantially but do not eliminate it, since herpes can shed from skin not covered by a condom.
Herpes Treatment
There is no cure for herpes, but antiviral medications — acyclovir, valacyclovir, or famciclovir — substantially reduce severity, frequency, and duration of outbreaks. Daily suppressive therapy with valacyclovir reduces asymptomatic shedding by approximately 50%, lowering transmission risk to partners. People taking daily suppressive therapy with an undetectable HSV viral load on standard NAAT tests have substantially lower transmission risk than the untreated baseline. Suppressive therapy is generally well-tolerated and typically taken indefinitely if transmission reduction is a priority.
Herpes Health Risks
For most people, herpes causes recurrent but manageable outbreaks rather than serious health complications. The most clinically significant risk is neonatal herpes — transmission during delivery to a newborn — which can be life-threatening. Women with active genital herpes at the time of delivery typically deliver by caesarean section to reduce this risk. In immunocompromised individuals (HIV, organ transplant recipients), herpes outbreaks can be more severe and require higher-dose antivirals. Rare complications include herpes encephalitis (brain inflammation) and herpes meningitis, which occur predominantly in primary (first) infection.
Herpes Prevention
Consistent condom use reduces genital herpes transmission but is not complete protection, as herpes can shed from uncovered skin. Daily suppressive antiviral therapy for the infected partner reduces transmission risk by approximately 50%, and combined with condom use, the reduction is greater. Avoiding sex during outbreaks further reduces transmission risk. Discussing herpes status with partners before sexual contact is both ethically important and, in some US states, legally required. There is currently no licensed herpes vaccine.
Herpes Diagnosis
During an outbreak, herpes is diagnosed by PCR (polymerase chain reaction) swab of an active lesion — this is the most sensitive and specific method. Outside of outbreaks, blood tests (type-specific IgG serology) detect HSV-1 and HSV-2 antibodies, though these take 12–16 weeks to develop after infection and do not indicate the site of infection. The CDC does not recommend routine herpes serology screening for people without symptoms, as positive results without an outbreak history cause significant anxiety without changing clinical management for most people. If you have symptoms you think may be herpes, swab testing during the outbreak is more informative than a blood test.
Herpes Complications
Neonatal herpes — transmitted during birth when a parent has active genital herpes — is the most serious complication, with a high risk of mortality and long-term neurological damage in untreated infants. All pregnant people should discuss herpes history with their obstetric provider; suppressive antiviral therapy from 36 weeks gestation reduces the risk of active outbreaks at delivery. Herpes encephalitis is a rare but severe complication of primary HSV-1 infection. In people with HIV or other immunocompromising conditions, herpes outbreaks may be more frequent, larger, and more painful, requiring higher-dose or IV antiviral therapy.
Herpes Post-Diagnosis Advice
Start antiviral treatment promptly if you have an active outbreak — earlier treatment shortens duration and severity. Discuss daily suppressive therapy with your provider if you have frequent outbreaks (more than 6 per year), if transmission to a partner is a concern, or if outbreaks significantly affect your quality of life. Tell current and recent sexual partners — many will already have herpes (HSV-1 seroprevalence exceeds 50%), and disclosure allows them to make informed decisions. The psychological response to a herpes diagnosis is often more distressing than the physical reality of the infection — this is well-documented and worth acknowledging. Peer support groups and therapists who specialise in sexual health can help significantly with the adjustment period.
Herpes Myths & Facts
Myth: Herpes is rare. Fact: Approximately 1 in 6 Americans has genital HSV-2; HSV-1 affects the majority of adults globally.
Myth: You can only transmit herpes during an outbreak. Fact: Asymptomatic shedding — viral transmission without visible sores — is responsible for the majority of new herpes infections.
Myth: If you have herpes, you can't have a healthy relationship or sex life. Fact: People with herpes maintain long-term relationships and active sex lives. With suppressive therapy, condoms, and informed disclosure, transmission risk is substantially reduced.
Myth: Herpes always causes obvious painful sores. Fact: Many people have mild or absent symptoms and never know they have herpes.
Herpes FAQ
Can herpes be cured?
There is no cure for herpes — the virus remains latent in nerve tissue for life. However, antiviral medications (acyclovir, valacyclovir, famciclovir) effectively suppress outbreaks, reduce asymptomatic shedding, and substantially lower transmission risk. Most people with herpes on suppressive therapy have infrequent or no outbreaks.
Can you still have a relationship if you have herpes?
Yes. People with herpes maintain long-term, healthy intimate relationships. Honest disclosure, daily suppressive therapy, and consistent condom use substantially reduce transmission risk. Many people find that partners respond to disclosure far better than anticipated — the fear of rejection is typically worse than the actual experience of the conversation.
