Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 10/22/2025

Postherpetic Neuralgia Incidence and Prevention

Epidemiology and Risk Factors

  • Patients over 75 years have a higher incidence of postherpetic neuralgia (PHN), with approximately 75% developing PHN, according to the Journal of Microbiology, Immunology and Infection 1

Clinical Impact and Prevention

  • The American Academy of Neurology and other guideline societies imply that PHN accounts for 11-15% of all referrals to pain clinics and represents the most common and debilitating complication of herpes zoster, particularly in the elderly, with patients demonstrating higher consumption of healthcare services 1
  • The Centers for Disease Control and Prevention recommends that vaccination against herpes zoster is the most effective strategy to prevent PHN, with the recombinant zoster vaccine (RZV/Shingrix) demonstrating 88.8% efficacy against PHN in adults ≥70 years, and the live zoster vaccine (ZVL/Zostavax) showing 66.5% efficacy 2

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