Medically reviewed by Dr. Ponlawat Pitsuwan, Physician, Takecare Clinic Phuket. Last reviewed: September 2026.
A first episode of genital herpes can be very painful and frightening, and people often arrive convinced they have something far worse. Antiviral treatment started early shortens the episode, and a calm explanation of what herpes means long term is often just as important as the tablets.
Genital herpes causes more distress than almost any other diagnosis we make, and much of that distress comes from misunderstanding. People are often convinced that a first outbreak on holiday means someone on this trip gave it to them, when the virus may have been silently present for months or years. We also see plenty of sores that are not herpes at all: rubbing from sand and wet swimwear, shaving rash, or a painless ulcer that turns out to be syphilis. Getting the diagnosis right, starting antivirals quickly and explaining what the virus means for relationships are the three things we focus on.
How genital herpes behaves
Two types of herpes simplex virus cause genital herpes. HSV-2 is the classic genital type, while HSV-1, the virus behind cold sores, now causes a large share of genital infections because it spreads through oral sex. Both pass through skin-to-skin contact, including at times when no sore is visible, which is called asymptomatic shedding. After the first infection, the virus settles in nerve roots near the base of the spine and can reactivate later, travelling back along the nerve to the skin.
A first episode, if it is noticed at all, typically appears 2 to 12 days after contact. Many first infections cause no symptoms, so the first outbreak someone notices may be a recurrence of an infection caught long before. Recurrences are usually milder and shorter than the first episode, genital HSV-2 recurs more often than genital HSV-1, and outbreaks tend to become less frequent over time. Friction, illness, fatigue, stress, menstruation and sunburn are common triggers, and a long-haul flight followed by late nights and heat is a familiar combination.
Recognising an outbreak, and what else it could be
Many outbreaks begin with a prodrome, an early warning of tingling, itching or burning in one area. Small blisters then form, break into shallow painful ulcers, crust over and heal. A first episode can last two to four weeks and may come with fever, aching, swollen tender glands in the groin and severe pain on passing urine. Recurrences usually heal within 5 to 10 days. Several other conditions can look similar, and a genital ulcer always deserves a proper assessment.
| Condition | Typical appearance | Pain | Key test |
|---|---|---|---|
| Genital herpes | Clusters of small blisters or shallow ulcers | Stinging, often marked | HSV PCR swab |
| Primary syphilis | Usually a single firm, clean-based ulcer | Usually painless | Syphilis blood test |
| Shaving rash or folliculitis | Red spots centred on hairs | Mild tenderness | Examination |
| Friction or sand abrasion | Raw patches where skin rubs | Sore | Examination; heals in days |
| Thrush | Redness, fine splits in the skin, discharge | Itchy and sore | Examination and swab |
| Shingles on the buttock or genitals | A band of blisters on one side only | Burning nerve pain | Examination; PCR if unsure |
Shingles in this area is often mistaken for herpes, and our shingles treatment page explains how it is managed.
How we confirm herpes and treat it
The most reliable test is a swab from the base of a fresh blister or ulcer, tested by PCR for herpes simplex virus. It works best in the first few days, before the sore crusts, and it tells us whether the virus is HSV-1 or HSV-2, which helps predict how often outbreaks may return. Blood antibody tests have a limited role: they cannot show when or where an infection was caught and are not recommended for routine screening. Because any genital ulcer raises the question of syphilis and HIV, we usually offer those tests at the same visit, and our STD testing in Phuket page explains the timing.
Antiviral tablets are the core of treatment. For a first episode, aciclovir, valaciclovir or famciclovir is taken for about 5 to 10 days, ideally started within 5 days of the sores appearing or while new ones are still forming. The medicines reduce pain, speed healing and shorten viral shedding, but they do not remove the virus from the nerves. For recurrences, a short course of 1 to 5 days, depending on the drug, works best when started at the first tingle, so people with frequent outbreaks often keep a supply at hand. If outbreaks come about six or more times a year, or cause real distress, daily suppressive therapy can prevent most of them and lowers the risk of passing the virus to a partner.
Self-care while the sores heal
Simple measures make a real difference. Bathe the area in lukewarm salty water, pat it dry gently and apply petroleum jelly to protect the skin. Loose cotton underwear and airy clothing help, and so does changing out of wet swimwear promptly rather than sitting in it on a hot beach. If passing urine stings, try doing it in a shallow bath or while pouring lukewarm water over the area. Paracetamol or ibuprofen help with pain, and a local anaesthetic ointment can be used for short periods. Do not burst blisters, wash your hands after touching sores, and avoid sex, including oral sex, from the first tingle until the skin has completely healed.
Relationships, disclosure and pregnancy
Herpes is extremely common, and most people who carry HSV-2 do not know it. It is a skin condition rather than a danger to general health, and many people with herpes have long relationships without passing it on. Telling a partner is worth doing, and condoms, avoiding sex during outbreaks and suppressive treatment all reduce the risk of transmission. If you are pregnant, tell your midwife or obstetrician. A first episode in late pregnancy carries a risk of passing the virus to the baby, so it needs urgent specialist advice, while recurrent herpes carries a much lower risk and is usually managed with antivirals from around 36 weeks.
When to see a doctor
Any first genital sore should be seen, ideally while it is fresh enough to swab. Come in urgently if you cannot pass urine, which happens in severe first episodes and may need a catheter, if the sores are spreading or not healing after two weeks, if you have a weakened immune system, or if you are pregnant.
Prevention and early detection
Condoms reduce the risk of genital herpes but cannot remove it, because the virus can shed from skin they do not cover. Avoiding sex during the prodrome and while sores are present removes the highest-risk times, and daily suppressive therapy lowers the risk further for couples where one partner has herpes. Oral sex with a cold sore is a common route for HSV-1 to reach the genitals, so wait until any lip sore has fully healed. Having a genital ulcer also raises the risk of acquiring HIV, which is one reason prompt assessment matters.
Seeing a doctor about herpes, day or night
A painful sore is not something to sit with until morning, and our clinics never close. Walk in to the Bangtao (Cherngtalay) clinic, the Kata-Karon clinic on Kedkwan Road, or the Patong clinic on Prachanukroh Road. Send a WhatsApp message to our team or dial +66 81 718 9080 if you have questions first. The walk-in doctor in Phuket service usually sees people within minutes, and antivirals and pain relief are dispensed from the on-site pharmacy.
If walking is uncomfortable, a doctor hotel visit in Phuket brings the consultation and the swab to your room at any hour. We confirm the price on WhatsApp before your visit. For a symptomatic outbreak, direct billing is possible with many travel insurers, and we can also give you a detailed invoice and medical report to submit yourself.
Related services and treatments
Because herpes sores raise the risk of HIV, anyone with a possible exposure in the last 72 hours should consider PEP treatment in Phuket, and an HIV test in Phuket at the right time is sensible after any new ulcer. Our PrEP clinic in Phuket helps if the risk is ongoing. Oral HSV-1 is covered on our cold sore treatment page. Discharge alongside sores may point to another infection, such as chlamydia (see chlamydia treatment) or bacterial vaginosis (see BV treatment). You can also browse the full list of conditions we treat.
Summary
Genital herpes is common, manageable and often misunderstood. Have a fresh sore swabbed, start antivirals as early as possible, and use salt baths, petroleum jelly and loose clothing while it heals. A first outbreak does not prove a new infection. Frequent recurrences can be prevented with daily treatment, and urinary retention, severe headache or pregnancy need urgent care.
“Start antivirals as early as you can in a first outbreak. Herpes is very common and manageable, and a diagnosis does not have to change your life.”
Dr. Ponlawat Pitsuwan, Physician, Takecare Clinic Phuket
Frequently asked questions
This is my first outbreak. Does that mean I caught it on this trip?
Not necessarily. Many people carry herpes for months or years without symptoms, and the first outbreak they notice can be a reactivation of an old infection triggered by heat, friction, stress or illness. A swab confirms the virus type, and in some cases a blood test showing existing antibodies suggests the infection was caught earlier. We can talk this through with you and a partner.
How quickly do antiviral tablets work?
Antivirals work best when started early, ideally at the first tingle for a recurrence or within five days of a first outbreak. Pain often starts to ease within a few days, and healing is faster than without treatment. They cannot erase an outbreak that is already crusting, which is why people with frequent episodes keep a short course ready.
Can I walk in with a painful sore, or do I need an appointment?
You can walk in at any time, day or night, at any of our three clinics without an appointment. Coming in while the sore is fresh gives the most reliable swab result. If you want to check anything first, send a WhatsApp message and we will reply with practical advice.
Can a doctor see me in my hotel if walking is painful?
Yes. Our doctors travel to hotels and villas all over the island at any time of night, and can examine the sores, take a swab and start treatment in the room. A first episode can make walking and passing urine very uncomfortable, so a room visit is often the easier option. Message us on WhatsApp to arrange it.
Will travel insurance cover herpes treatment?
An outbreak that needs assessment and treatment during your trip is often covered as a new medical problem, though some policies exclude conditions you already knew about. We can bill many travel insurers directly, and we confirm the price on WhatsApp before your visit. You will receive an invoice and medical report if you need to claim yourself.
Can I pass herpes on when I have no sores?
Yes, although the risk is much lower than during an outbreak. The virus can be shed from normal-looking skin, particularly in the first year after infection and with HSV-2. Condoms, avoiding sex during tingling or sores, and daily suppressive antivirals all reduce the chance of passing it to a partner, and combining them works best.
Sources
The NHS guide to genital herpes covers symptoms, treatment and self-care. The World Health Organization fact sheet on herpes simplex virus explains HSV-1 and HSV-2 worldwide. The CDC summarises testing and prevention on its herpes information pages.
Genital herpes, herpes simplex virus, HSV-1, HSV-2, asymptomatic shedding, prodrome, HSV PCR swab, aciclovir, valaciclovir, famciclovir, suppressive antiviral therapy, primary syphilis, shingles, neonatal herpes, urinary retention, NHS, WHO, CDC, Bangtao, Cherngtalay, Kata, Karon, Patong, Phuket, Takecare Clinic Phuket, Dr. Ponlawat Pitsuwan
This page is general health information and not a substitute for a medical consultation.