Genital herpes is a sexually transmitted infection (STI) that is caused by herpes simplex viruses (HSV) types 1 and 2. This is the same type of virus that causes cold sores.
Around 1 in every 8 sexually active Australian adults have genital herpes.
Genital herpes can cause outbreaks (flare-ups) of blisters or sores on the genitals and anus. Once infected, you can continue to have outbreaks of symptoms throughout your life.
If you think you have genital herpes, it is important to see a doctor as soon as possible to get a diagnosis, and start treatment.
Most people infected with genital herpes have no symptoms, but some people can experience:
The sores can appear on the parts of the skin that have contact with a partner during sex: the penis in males and the labia, clitoris and vulva in females. You might also see sores in the anus or on the buttocks and inner thighs.
The first episode of infection can also have flu-like symptoms such as:
Genital herpes can cause an outbreak of blisters and sores on the genitals.
After the first episode, the virus stays in your body for the rest of your life, which means you can have recurrent outbreaks(flare-ups) of sores and blisters. Recurrent episodes are usually milder, shorter and less frequent over time. They are more likely to happen when your immune system is weak, due to illness, tiredness or stress.
Genital herpes is spread by skin-to-skin contact with someone who has the herpes simplex virus (HSV), usually during genital or oral sex. It can also be spread through kissing, foreplay or non-penetrative sex.
There are 2 types of HSV, both viruses can affect either the lips, mouth, genital or anal areas, however:
The HSV virus is most easily spread when there are blisters or sores, but it can sometimes be passed even if a person has no active blisters, sores or other symptoms.
You cannot get genital herpes from things like hugging, swimming pools or toilet seats.
A swab from a blister or sore can be sent to a lab to check if you have herpes simplex virus. It is best if the blister is less than 4 days old. In some cases, you may be able to take your own swab, so you can find out as soon as possible.
A doctor or nurse can also take a blood sample, to check the type of herpes virus you have, and recommend the best course of treatment.
There is no cure for genital herpes. Your doctor can prescribe an antiviral medicine to reduce your symptoms.
Antiviral medicines are most effective if you start taking them within 2 days of the first symptoms. They can help control outbreaks if they are frequent or severe, and can reduce your risk of passing the virus on to a sexual partner.
You can help manage your symptoms by:
Genital herpes is common, but still has a big social stigma. Having a diagnosis of genital herpes may cause you distress. Psychologists and counsellors can help you to work through the distress or anxiety of having genital herpes.
Remember that herpes can be passed on by someone who doesn't know that they have it, and your first symptoms may appear a long time after you were first infected. This is why it is important to always use condoms and dental dams when having sex, even when you have no symptoms. A dental dam is a square of thin latex that can be placed over the vulva or anal area during oral sex.
It is safest to avoid sex when you have blisters, sores or symptoms.
Herpes is not an infection that needs your doctor to notify the health department or needs you to do contact tracing. Your doctor can help you decide who to tell and how to tell them, to help you reduce the risk of passing on the virus.
It is important to tell your GP or obstetrician that you or a partner have had genital herpes, so that they can advise you about reducing the risk of infection to your baby. The highest risk to your baby happens if you have your first episode of genital herpes in your third trimester.
If you have ever had genital herpes, your doctor will recommend you take antiviral medicines — even if you don't have an outbreak. This is to prevent a recurrence towards the end of pregnancy, which would prevent you from having a vaginal birth.
If your doctor is worried about the risks to your baby, they may recommend you have a caesarean birth.
Practising safe sex is the best way to help prevent genital herpes infection.
It is safest to:
If you notice that any of your genital skin looks or feels unusual, see your doctor and ask them to check for herpes. Once your doctor confirms an infection with HSV, they can give you the right treatment. Any time blisters appear you should see your doctor for treatment.
You should also have a review with your doctor a week after starting treatment for the first time, to check your results and make sure the treatment is working.
If you have ever had a diagnosis of genital herpes and are having trouble passing urine (weeing) or opening your bowels (pooing) see your doctor.
If you are in pain, or have frequent outbreaks (flare-ups) or don't see an improvement with antiviral medicines, speak to your doctor.
If you know a child with genital sores, it is important that they see a doctor for a diagnosis. Sores can be due to many different causes. Genital herpes in children needs careful assessment, as sexual abuse needs to be considered if an obvious source cannot be found.
To learn more about genital herpes, how it's prevented and treated contact your doctor or nearest sexual health clinic.
You can also find resources and support through one of these organisations:
Call the healthdirect helpline on 1800 022 222 at any time to speak to a registered nurse (known as NURSE-ON-CALL in Victoria) for more information and advice.
Young Deadly Free (Opens in new tab) website has videos and factsheets (Opens in new tab) about STIs and other disease-causing viruses for young people in remote Aboriginal and/or Torres Strait Islander communities, as well as resources for elders, parents, youth workers and other community leaders.
The Victorian Sexual Health Network has a factsheet on herpes, translated in several languages (Opens in new tab).
Find out how we develop and review our content.
Last reviewed: December 2025
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