Written by:Fact check:

Overview

What Is Genital Herpes?

Genital herpes is a common sexually transmitted infection caused by herpes simplex virus type 1 (HSV-1) or type 2 (HSV-2). It can cause blisters or sores around the genitals, anus, buttocks, or thighs and can recur after the first infection. Many people have no symptoms, while others have mild symptoms that may be mistaken for another skin condition. Anyone who has sexual contact can be affected, including people who do not know they carry the virus.

Symptoms

Genital Herpes Symptoms

Symptoms may appear a few days after infection or years later. Some people never notice symptoms, and mild sores or irritation may be mistaken for shaving irritation, pimples, or another skin problem. A first outbreak is often more noticeable than recurrent outbreaks, which may be shorter and milder.

  • Painful, grouped blisters on or around the genitals, anus, buttocks, thighs, or mouth.
  • Open, shallow sores that develop after blisters break.
  • Itching or tingling in the affected area.
  • Burning or pain with urination, especially when sores are near the urethra.
  • Genital or rectal pain.
  • Unusual vaginal, penile, or rectal discharge.
  • Fever, body aches, swollen glands, or other flu-like symptoms during a first outbreak.
  • No noticeable symptoms, even though the infection may still be transmissible.

How It Spreads

How Genital Herpes Spreads

Genital herpes spreads through vaginal, anal, or oral sex and through direct skin-to-skin contact with an infected area. Transmission can occur when a person has blisters or sores, but the virus can also spread when no visible sores are present. Oral herpes, including cold sores caused by herpes simplex virus type 1, can spread to the genitals during oral sex.

SituationWhat to know
Sexual skin-to-skin contactVaginal, anal, or genital-to-genital contact can spread herpes, including when sores are not visible.
Oral sex from a person with oral herpesHSV-1 from a cold sore or another oral infection can spread to a partner's genitals.
KissingKissing can spread oral herpes, especially when a person has a cold sore, but it does not usually cause genital infection unless infected skin contacts the genital area.
Toilet seats, towels, or utensilsThese everyday objects and shared utensils do not typically spread genital herpes because the virus does not survive well away from the body.

Risk Factors

Genital Herpes Risk Factors

  • Sexual contact with a partner who has genital herpes or may carry herpes simplex without symptoms increases the chance of infection.
  • Having a new or multiple sexual partners increases the number of possible exposures to genital herpes.
  • Sex without condoms or dental dams allows more direct skin-to-skin contact with infected areas.
  • Receiving oral sex from a partner with oral herpes or a history of cold sores can expose the genitals to HSV-1.
  • A weakened immune system can make outbreaks more severe or harder to control.
  • A previous genital herpes infection means recurrences may occur, although illness, stress, fatigue, friction, hormonal changes, or immune suppression may affect their timing.

Factors That May Trigger Recurrences

Illness, stress, fatigue, friction, hormonal changes, or immune suppression may come before a recurrence. However, an outbreak can also happen without an obvious trigger.

Complications

Genital Herpes Complications

  • Painful or frequent recurrences can interfere with sex, sleep, work, and emotional well-being.
  • Sores near the urethra can cause difficulty or pain with urination.
  • Rarely, herpes can cause meningitis or encephalitis, which are infections or inflammation involving the tissues around or within the brain.
  • Genital herpes can increase the risk of acquiring HIV if a person is exposed to HIV.
  • People with weakened immune systems may develop severe, prolonged, or widespread infection.
  • A newborn can develop a serious herpes infection if the virus spreads during pregnancy or delivery.

Pregnancy

Tell Your Obstetric Clinician

Genital herpes can rarely spread to a newborn during pregnancy or delivery. If you are pregnant, tell your obstetric clinician about current or past genital herpes so they can plan appropriate monitoring and care.

Diagnosis

How Genital Herpes Is Diagnosed

A clinician may diagnose obvious sores by examining them, but testing is often needed because genital herpes can resemble other conditions. Testing is most useful when a fresh lesion is available, and the clinician may ask about symptoms, sexual exposure, and previous outbreaks.

  • A swab from a fresh sore can be tested with PCR or another molecular test to detect herpes simplex virus.
  • Viral culture may be used in some situations, although it is generally less sensitive than molecular testing, especially as a sore heals.
  • Type-specific blood testing may be considered in selected situations, but it has limitations and does not show when or where the infection was acquired.
  • Routine blood testing for genital herpes without symptoms is not recommended for everyone and should be discussed with a clinician.

Treatment & Management

Genital Herpes Treatment and Management

Antiviral medicines such as acyclovir, valacyclovir, or famciclovir do not remove herpes simplex virus from the body. When taken as prescribed, they can shorten outbreaks, reduce symptoms, and lower the chance of transmission. A clinician can help choose treatment based on whether this is a first episode, an occasional recurrence, or a pattern of frequent outbreaks.

ApproachWhen it may be used
First-episode therapyA prescribed antiviral course is used for a first recognized outbreak, which may be more severe or last longer.
Episodic therapyMedication is started at the first warning sign, such as tingling or burning, or as soon as sores appear during a recurrence.
Daily suppressive therapyA daily antiviral may be considered for frequent or distressing recurrences or to help reduce transmission risk in certain situations.
  • Keep the affected area clean and dry.
  • Wear loose clothing and breathable underwear to reduce rubbing and irritation.
  • Use pain relief recommended or approved by a clinician.
  • Drink fluids, particularly if urination is painful.
  • Avoid vaginal, anal, and oral sex during sores or warning symptoms.

Prevention

How to Prevent Genital Herpes

  • Use condoms or dental dams during vaginal, anal, and oral sex, understanding that they do not cover every area that may carry the virus.
  • Avoid vaginal, anal, or oral sex during sores or warning symptoms such as tingling, burning, or itching.
  • Discuss testing, symptoms, and herpes history openly with sexual partners before sexual contact.
  • Avoid touching sores and then touching the eyes, and wash hands carefully after contact with an affected area.
  • Take prescribed daily suppressive therapy when it is appropriate for recurrence control or transmission-risk reduction.

Outlook and Prognosis

Outlook for Genital Herpes

Genital herpes currently has no cure, but it can be managed effectively. The virus remains in the body, while many people have fewer or milder recurrences over time; some never notice another outbreak. Treatment, partner communication, and prevention measures can help reduce symptoms and transmission risk.

When Should You See a Doctor

When Should You See a Doctor for Genital Herpes?

  • Seek medical advice for a first genital outbreak or any new blisters or sores.
  • Contact a clinician when symptoms are severe, worsening, or difficult to explain.
  • Ask for prompt care if sores or swelling cause difficulty urinating.
  • Discuss treatment if recurrences are frequent, painful, or affecting daily life.
  • Arrange medical evaluation if you have a weakened immune system.
  • Seek testing and counseling after possible exposure to HIV or another sexually transmitted infection.
  • Tell your obstetric clinician about current or past genital herpes during pregnancy.
  • Ask about herpes therapy when you need help controlling symptoms or reducing transmission risk.

Get prompt care

Know the Urgent Warning Signs

Seek urgent evaluation for a severe headache, stiff neck, confusion, eye pain or vision changes, inability to urinate, or rapidly worsening illness. Prompt care is especially important during pregnancy or for anyone who is immunocompromised.

Branches

1 topic

Symptoms

1 topic

  • Genital Herpes

    Fever