A herpes diagnosis can feel like a lot to take in, but HSV-1, traditionally linked to cold sores, is now one of the most common causes of genital herpes and rarely changes life as much as people fear. At The Wright Practice, we talk patients through what HSV-1 actually is, how it is transmitted, and how straightforward it usually is to manage.
HSV-1 was traditionally associated with oral cold sores, but it is now an increasingly common cause of genital herpes, particularly following oral sex.
HSV-2 more commonly affects the genital area and is more likely to cause recurrent outbreaks and asymptomatic viral shedding. However, the severity and frequency of symptoms vary considerably from person to person.
| Genital HSV-1 | Genital HSV-2 | |
|---|---|---|
Typical transmission | Often oral-to-genital during oral sex | Usually genital-to-genital sexual contact |
Recurrences | Usually less frequent | Usually more frequent |
Asymptomatic shedding | Generally less frequent over time | Generally more frequent |
Treatment | Antiviral medication when required | Antiviral medication when required |
Long-term outlook | Usually very manageable | Usually very manageable |
HSV is transmitted through direct contact with affected skin or mucous membranes. This can happen during:
HSV-1 is commonly passed from the mouth to the genital area during oral sex. HSV-2 is usually transmitted through genital sexual contact.
The virus can also be passed on when there are no visible sores. This is known as asymptomatic viral shedding. Transmission is most likely when blisters, ulcers, tingling or other warning symptoms are present, but the risk is not completely absent between outbreaks.
Condoms and dental dams reduce the risk but cannot eliminate it because herpes may be present on skin that they do not cover.
Many people carrying HSV-1 or HSV-2 have no symptoms or experience symptoms so mild that they do not recognise them as herpes.
When symptoms occur, they may include:
The first recognised episode is often the most noticeable. Subsequent outbreaks are generally milder, shorter and easier to manage.
Genital HSV-1 usually recurs less frequently than genital HSV-2, and some people with genital HSV-1 never experience another outbreak. HSV-2 is more likely to recur, although outbreaks commonly become less frequent over time.
If a blister, ulcer or area of broken skin is present, a PCR swab taken directly from the lesion is the most accurate way to confirm genital herpes.
The test can distinguish between HSV-1 and HSV-2, which helps us provide more individualised advice about likely recurrence and transmission patterns.
It is best to arrange testing as soon as symptoms appear, before the skin begins to heal. The swab takes only a few seconds, although contact with an already tender lesion can be briefly uncomfortable.
If there are no visible symptoms, a blood test can look for antibodies to HSV-1 and HSV-2. This can be useful in selected situations, including when:
It is important to understand the limitations. A positive antibody result indicates previous exposure but cannot usually show when the infection occurred or whether it is oral or genital. Antibodies also take time to develop, so testing very soon after a possible exposure may need to be repeated.
Dr Dan Wright will interpret the result alongside your symptoms, history and any previous test results rather than considering the blood test in isolation.
If you would also like a wider sexual health check, our comprehensive STI screening service can be arranged during the same appointment.
Testing or clinical assessment may be helpful for:
Not every spot, ulcer or area of irritation is herpes. Syphilis, folliculitis, thrush, dermatitis, friction and other skin conditions can produce similar symptoms, which is why proper examination and appropriate testing matter.
There is currently no treatment that removes HSV from the body completely, but antiviral medication makes outbreaks and transmission much easier to manage.
The commonly used treatments are aciclovir, valaciclovir and famciclovir.
A first episode is usually treated with a course of antiviral tablets. Treatment works best when started promptly, particularly while new lesions are still appearing.
Pain relief and simple supportive measures may also help, including saline bathing, loose clothing and applying petroleum jelly or local anaesthetic before passing urine.
People with occasional recurrences may keep a short course of antiviral medication available. Starting it at the first sign of tingling, irritation or blistering can shorten the outbreak and reduce its severity.
Suppressive therapy involves taking a lower dose of antiviral medication every day. It may be helpful for people who:
Suppressive treatment is particularly well established for genital HSV-2 and can reduce both recurrences and transmission risk, although it cannot remove the risk entirely. It may also be considered for troublesome genital HSV-1.
Treatment can be reviewed periodically rather than continued automatically.
The following steps can help reduce the chance of passing HSV to a partner:
No single measure removes the risk completely, but combining these approaches can reduce it considerably.
The cost depends on whether you require a consultation, PCR swab, HSV antibody testing, a wider STI screen or medication.
This typically includes your clinical assessment, the agreed tests and a follow-up discussion of your results and treatment options. Any medication or ongoing suppressive treatment will be explained and priced clearly before you proceed.
Please contact The Wright Practice for a tailored quotation based on your circumstances.
HSV-1 can cause either oral cold sores or genital herpes. HSV-2 can also cause genital herpes. A PCR swab from an active lesion can identify which type is present.
Yes. Oral-to-genital transmission is one of the most common ways genital HSV-1 is acquired. It can occur even if the person carrying oral HSV-1 has no visible cold sore.
Neither is inherently “worse,” but they tend to behave differently. Genital HSV-1 usually causes fewer recurrences and less asymptomatic shedding, while genital HSV-2 is more likely to recur and be transmitted between outbreaks.
A blister or ulcer can be swabbed as soon as it appears. Blood antibodies take time to develop, so a test performed soon after exposure may be negative and may need to be repeated.
Yes. HSV can occasionally be present on the skin without causing visible symptoms. This is called asymptomatic viral shedding and is more frequent with genital HSV-2 than genital HSV-1.
Not necessarily. A positive antibody test confirms previous exposure to that HSV type but cannot usually determine whether the infection is oral or genital or when it was acquired.
Daily antiviral treatment can reduce outbreaks and asymptomatic shedding. For genital HSV-2, it has also been shown to reduce transmission between partners, although it cannot eliminate the risk completely.
We generally encourage an open conversation with sexual partners. We can help you understand and explain your individual risk clearly and without unnecessary alarm.
No. HSV-1 and HSV-2 do not affect fertility. Herpes during pregnancy requires additional consideration, particularly if the first infection occurs late in pregnancy.
Yes. Genital herpes does not prevent healthy relationships or a fulfilling sex life. Most people manage it with occasional treatment, practical precautions and, where helpful, daily suppressive medication.
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