Genital Herpes UK: Complete Guide to Symptoms, Treatment & Suppression

What is genital herpes?

Genital herpes is a common sexually transmitted infection (STI) caused by the herpes simplex virus (HSV). Two types exist: HSV‑1 (traditionally cold sores) and HSV‑2 (traditionally genital). Both can cause genital lesions.

Once acquired, the virus travels to a cluster of nerve cells (ganglion) near the spine and remains there for life. It can reactivate periodically, causing outbreaks. There is no cure – but effective antiviral medicines (aciclovir, valaciclovir/Valtrex) control symptoms, speed healing, and lower the chance of passing the virus to partners.

How common is genital herpes in the UK?

Genital herpes is one of the most frequent viral STIs. According to UK Health Security Agency data, around 400,000 people in England are diagnosed each year with a first episode. However, many more carry the virus without ever knowing it – because symptoms can be mild or absent. Estimates suggest 1 in 10 sexually active adults in the UK has HSV‑2, and up to 1 in 3 have HSV‑1 (which can also cause genital herpes through oral sex).

Causes and transmission

Genital herpes is spread through skin‑to‑skin contact, usually during vaginal, anal, or oral sex. The virus is most infectious when sores are present, but asymptomatic shedding – when the virus is on the skin without visible lesions – accounts for up to 70% of transmissions. Condoms reduce but do not eliminate risk, because the virus can be present on skin not covered by a condom.

Symptoms of genital herpes

Many people have no symptoms or very mild ones. When symptoms occur, they usually appear 2–12 days after exposure:

• Prodrome (warning signs) – tingling, itching, burning, or aching in the genital area 12–24 hours before blisters appear.
• Painful blisters or ulcers – small red bumps or white blisters that rupture into shallow, painful sores.
• Flu‑like symptoms – fever, headache, muscle aches, and swollen lymph nodes in the groin (common in first episode).
• Pain on urination – especially when urine passes over open sores.

First episodes are usually the most severe, lasting 2–4 weeks without treatment. Recurrences are typically milder and shorter – often just a few days of tingling and a small patch of irritation.

Diagnosis and when to test

Genital herpes is usually diagnosed clinically – by looking at the lesions. If there is doubt, a swab from a blister or ulcer can be sent for PCR testing to confirm HSV and type (1 vs 2). Blood tests for antibodies are not routinely recommended because they cannot tell you where the infection is (oral vs genital) and a positive result does not prove the current symptoms are herpes.

You should test if: you have typical sores; a partner has been diagnosed; you have recurrent unexplained genital irritation; or you are pregnant with a history of herpes (to plan management at delivery).

Treatment options: aciclovir and valaciclovir (Valtrex)

Both aciclovir and valaciclovir (brand name Valtrex) are highly effective antiviral medicines. They do not cure herpes but stop the virus from multiplying, giving your immune system the upper hand.

Episodic vs suppressive therapy – which is right for you?

Episodic treatment means taking antivirals only when you feel an outbreak coming on (prodrome) or as soon as blisters appear. It shortens the outbreak by 2–3 days and reduces severity. Ideal for people with infrequent recurrences (less than 6 per year).

Suppressive treatment means taking a lower daily dose every day, whether or not you have symptoms. It reduces recurrences by 70–80% and lowers transmission risk to partners by about 50% (proven for valaciclovir). Ideal for people with frequent recurrences (≥6/year), severe outbreaks, or a partner without herpes.

Preventing transmission to partners

• Daily suppressive therapy – reduces asymptomatic shedding and transmission by ~50% (valaciclovir 500mg once daily).
• Condom use – reduces risk by about 30‑50%, but does not cover all skin.
• Avoid sex during prodrome or visible sores – the highest risk period.
• Disclosure – being open with partners allows informed decisions and often strengthens relationships.

Overcoming stigma – why online treatment helps

Genital herpes carries an unjustified stigma, despite being an ordinary, manageable skin condition. Many people avoid seeking help because of embarrassment – but online consultation services like Access Doctor are designed specifically for this. You complete a short medical questionnaire from your phone or computer, and a GPhC‑registered pharmacist independent prescriber reviews it. If treatment is suitable, your aciclovir or Valtrex is dispatched in plain, discreet packaging for next‑day delivery. No need to visit a GP surgery or sexual health clinic in person unless complications arise.