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Oral Herpes (HSV-1)

Recurrent vesicular eruption of the lips and mouth caused by HSV-1

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Ağız ve Diş Sağlığı department. Book Appointment →

What is Oral Herpes (HSV-1)?

Oral herpes (herpes labialis, cold sores or fever blisters) is caused by Herpes Simplex Virus type 1 (HSV-1) in over 90% of cases, with HSV-2 accounting for the rest. Primary infection (herpetic gingivostomatitis) typically occurs in children with widespread vesicles, fever and lymphadenopathy. After primary infection, the virus establishes latency in the trigeminal ganglion and reactivates intermittently throughout life.

Recurrent episodes typically affect the vermilion border of the lips, with prodromal tingling, burning or itching followed by clusters of small vesicles that ulcerate, crust and heal within 7-14 days. Triggers include UV exposure, fever, stress, menstruation, immunosuppression and trauma. Atypical presentations include herpetic whitlow, herpetic keratitis, herpes encephalitis and disseminated infection in immunocompromised patients.

Symptoms

Tingling or burning sensation 6-48 hours before vesicles
Cluster of small painful vesicles on red base
Vermilion border of lips most commonly affected
Vesicles ulcerate, crust and heal in 7-14 days
Initial episode with fever, malaise and lymphadenopathy
Gingivostomatitis with widespread oral ulcers in primary infection
Recurrence triggered by sun, stress or fever
Neuralgic pain at site preceding vesicle formation

Risk Factors

UV light or sunburn exposure
Fever or systemic illness
Psychological stress
Menstruation and hormonal changes
Immunosuppression (HIV, chemotherapy, transplant)
Topical corticosteroid use
Local trauma (dental work, lip biting)
Atopic dermatitis (eczema herpeticum risk)

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • First episode with widespread oral ulcers
  • Frequent recurrences (more than 6 per year)
  • Severe pain interfering with eating
  • Lesions spreading or appearing atypical
  • Immunocompromised patient with new lesions
  • Eye involvement (urgent, herpetic keratitis)
  • Systemic symptoms with severe headache or confusion

Treatment Methods

01
Early antiviral therapy at prodrome (acyclovir, valacyclovir, famciclovir)
02
Topical antivirals (acyclovir cream, penciclovir) for mild episodes
03
Cold compresses and analgesics for pain
04
UV-protective lip balm with SPF 30+
05
Suppressive antiviral therapy for frequent recurrences (> 6/year)
06
Higher dose acyclovir for HIV or immunocompromised patients
07
Empirical IV acyclovir for suspected herpes encephalitis
08
Avoidance of triggers (sun, stress, fatigue)
09
Hand hygiene to prevent autoinoculation and transmission

Which Department to Visit?

You can visit our Ağız ve Diş Sağlığı department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Ağız ve Diş Sağlığı Department

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.