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Genital Herpes: Teen Version

What is genital herpes?



How does it occur?

You can become infected with the virus by contact with broken blisters or sores on the genitals, mouth, or rectal area of an infected person. The infection can be passed from person to person during sex. You may spread it from one part of your body to another if the virus gets on your hands.

Once you are infected, the virus stays in your body for the rest of your life. Most of the time the virus is inactive, which means it is staying in certain cells in the body and not causing symptoms. However, the virus may become active and cause sores again. The sores may come back often. Outbreaks of sores may occur with physical stress, for example, if you wear tight clothing, have sex without enough lubrication, or have another illness. Emotional stress or menstruation may also cause an outbreak. Most people with herpes have recurrent infections.

Herpes is very contagious when you have sores. The virus may also spread to others even if you have no symptoms, or for up to 3 months after the sores have healed.

What are the symptoms?

Symptoms usually occur within 2 weeks after the virus first enters your body. They may include:

  • vaginal discharge
  • pain when you urinate or have sex
  • trouble urinating
  • itching in the genital or anal area that starts suddenly
  • general discomfort, such as tiredness and muscle aches
  • fever (usually only with the first outbreak of blisters)
  • tender, enlarged lymph nodes in the groin

The sores appear first as tiny clear blisters. Usually they occur in groups of several blisters, but sometimes there may be just a single blister. The blisters usually quickly lose their thin tops. Then they look like small (1/8 inch to 1/4 inch wide), pink or red shallow sores. The blisters may be painful and oozing. They may become covered with a yellowish dried crust.

The symptoms of herpes are usually most severe during the first outbreak.

Some people infected with herpes have no symptoms.

How is it diagnosed?

Your healthcare provider will ask about your symptoms and examine you. Cells or liquid from one of the sores will be tested in the lab for the virus. Blood tests may be done to see if you have had a previous herpes infection.

How is it treated?

Genital herpes cannot be cured. The virus will stay in your body. However, your healthcare provider may prescribe antiviral medicine such as acyclovir, famciclovir, or valacyclovir to relieve your symptoms more quickly. Even though you are taking the medicine, the infection will still be very contagious as long as you have sores, but the medicine will shorten the amount of time you are contagious. If you are pregnant, discuss the use of these medicines with your provider.


How long will the effects last?

The sores usually start to heal after about 5 days. They generally disappear in 1 to 3 weeks. Sometimes they may last for as long as 6 weeks, especially if you also have a bacterial or yeast infection of the vagina.

The sores rarely leave scars.

About half of herpes-infected people have repeat outbreaks of sores. These recurrences tend to be milder than the first bout of herpes and the sores heal more quickly.


  • Follow the full treatment prescribed by your healthcare provider. Be sure to take all of the medicine as prescribed by your healthcare provider.
  • Wipe yourself from front to back after using the toilet.
  • Avoid sharing towels or clothing.
  • Avoid using douches, perfumed soaps, sprays, feminine hygiene deodorants, or other chemicals in the genital area.
  • Avoid a lot of sunlight and heat, which may cause more blisters.
  • Avoid sexual contact with others.

There are many herpes counseling groups that give support and help to people who have herpes. You can get more information by calling the National Sexually Transmitted Disease Hotline at 1-800-227-8922.

What can I do to help prevent recurrences of herpes infection?

You may have fewer recurrences if:

  • You take antiviral medicine as prescribed by your healthcare provider. Daily doses of acyclovir or another antiviral medicine may lessen the frequency of recurrent outbreaks of herpes sores and might prevent recurrences completely.
  • You avoid conditions that might cause the infection to recur, such as severe stress or vaginal infections.

How can I help prevent infection with genital herpes?

  • Practice safe sex. Always use latex or polyurethane condoms during any sexual contact. You cannot always know or predict when the virus will be shed or passed to someone else. This includes oral-genital and anal-genital sex. In addition, you are less likely to get a sexually transmitted disease if you have just one sexual partner who has no other partners.

Published by RelayHealth.
Last modified: 2011-02-07
Last reviewed: 2009-07-02


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