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Herpes is a sexually transmitted disease (STD) that causes painful outbreaks of blisters and sores. It spreads through contact with an infected area—usually a sore on the genitals or mouth. Herpes can also spread even when sores aren’t visible. There’s no cure for herpes. But treatment can help make outbreaks happen less often and be less severe.
An outbreak can happen a few days or weeks after sex. Some people have only one outbreak in their lifetime. Others have several outbreaks a year.
An outbreak begins with blisters on the penis, or in or around the vagina, mouth, or rectum.
After a few days, the blisters break and leave painful sores. These may take days or weeks to heal.
The first outbreak is often the worst. Later outbreaks are also painful, but tend to heal faster.
Medications can help reduce how often outbreaks happen. They can also lessen pain. Help sores heal faster by keeping them clean and dry. To avoid spreading the virus, don’t have sex during an outbreak. Also, avoid oral sex if you have a cold sore. Cold sores are another form of the herpes virus (oral herpes). Oral herpes can be passed from the mouth to the genitals.
Herpes isn’t deadly. But it does have risks:
Having herpes increases the chance of catching HIV (the virus that causes AIDS). Herpes sores make it easier for the HIV virus to be passed during sex.
If a woman has an outbreak during pregnancy, herpes can be passed to the baby at birth.
Don’t kiss or have sex if you or your partner has a herpes sore. And use latex condoms every time you have sex—even between outbreaks.