Genital Herpes (HSV): Why It Recurs, and How to Control It

နောက်ဆုံး ပြင်ဆင်သည် ဩဂုတ် 15, 2026

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Genital herpes is one of the conditions I see most often in the clinic. Because the painful genital ulcer is such a characteristic sign, the diagnosis is usually not difficult. What patients actually want answered is different: where did it come from, why has it happened to me, can it be cured, and how do I stop it coming back? This article takes those questions in turn.

The two strains of herpes simplex ဗိုင်းရပ်စ်

1. HSV-1 — usually lives around the mouth and causes oral ulcers, but can also cause genital herpes.
2. HSV-2 — usually lives in the genital area, and is the main cause of genital herpes.

How it behaves in the body

The virus is transmitted by direct contact with secretions or active lesions from an infected person. After the first exposure, painful genital ulcers or clusters of vesicles appear. Symptoms typically settle after around 14 days, but the virus does not leave — it withdraws into the nervous system and lies dormant there. When immunity dips — through illness, sleep deprivation or sustained stress — the virus reactivates and symptoms return. That cycle continues for life, which is why herpes is often described as a never-ending infection.

Diagnosis and treatment

The diagnosis can often be made clinically when the appearance is characteristic. Where confirmation is needed, the options are a Tzanck smear taken directly from a vesicle, or HSV PCR — the most accurate method, which also identifies whether the strain is HSV-1 or HSV-2.

Antiviral treatment with Acyclovir, Valacyclovir or Famciclovir shortens the duration of symptoms and the period during which the virus can be transmitted. Left untreated, an episode resolves on its own in roughly 19 days — so the purpose of treatment is not to cure the infection but to shorten and soften each episode, and to reduce the risk to a partner.

There is currently no approved vaccine against HSV. Because genital herpes is associated with other sexually transmitted infections, a comprehensive STI screen is worth doing at the same time rather than testing for herpes alone.

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Q1: Is herpes genitalia curable?

No. Herpes genitalia caused by Herpes Simplex Virus (HSV) is not curable. Once infected, the virus permanently resides in the nervous system in a dormant (hibernating) state. However, it is very manageable. Antiviral medications such as Acyclovir and Valacyclovir effectively reduce the severity and duration of outbreaks, speed up healing, and reduce the risk of transmitting the virus to partners.

Q2: How is herpes genitalia transmitted?

Herpes genitalia is transmitted primarily through direct skin-to-skin contact with an infected person’s secretions or active lesions during sexual activity. HSV-2, which mainly causes genital herpes, is spread through genital contact. HSV-1, which typically causes oral herpes, can also cause genital herpes through oral-genital contact. Importantly, transmission can occur even when an infected person has no visible sores, a phenomenon known as asymptomatic viral shedding.

Q3: Why does herpes genitalia keep coming back?

After the initial infection, the HSV virus hides in the nervous system in a dormant state, kept inactive by the immune system. When the immune system is weakened due to illness, excessive stress, sleep deprivation, or other medical conditions, the virus reactivates and travels back to the genital skin, causing a new outbreak. This reactivation cycle can repeat throughout a person’s lifetime, which is why herpes is described as a “never-ending” viral infection.

Q4: How is herpes genitalia diagnosed?

Herpes genitalia can be diagnosed clinically when the characteristic painful genital ulcers or vesicular clusters are visible and the patient has a known history. Laboratory confirmation options include a Tzanck smear (direct swab from the lesion) or HSV PCR blood test when direct swabbing is not possible. HSV PCR is the most accurate diagnostic method and can also identify whether the strain is HSV-1 or HSV-2.

Q5: How can I prevent herpes genitalia outbreaks?

Maintaining a healthy immune system is the most important factor in preventing recurrent outbreaks. This includes adequate sleep, stress management, regular exercise, and a healthy diet. For patients with frequent recurrences, suppressive antiviral therapy (daily low-dose Acyclovir or Valacyclovir) can significantly reduce outbreak frequency and the risk of transmission to partners. Using condoms consistently also reduces, though does not eliminate, transmission risk.

If you are experiencing symptoms of herpes genitalia or recurring genital ulcers, Dr. Soarawee Weerasopone offers confidential sexual health consultations at Bangkok Hospital Headquarters. တိုင်ပင်ဆွေးနွေးမှု ကြိုတင်မှာယူရန်. Appointments at Samitivej Sriracha Hospital can be arranged by calling the Urology department on 088-022-1445.

ရှောင်ကြဉ်ချက်: This content is written and reviewed by Dr. Soarawee Weerasopone, a board-certified urologist at Bangkok Hospital Headquarters. It is intended for educational purposes only and does not constitute medical advice. No medical advice, diagnosis or prescription is provided through personal messaging channels. Always consult a qualified healthcare professional before starting any medical treatment.