Venlafaxine for the Prevention of Postherpetic Neuralgia in Patients with Acute Herpes Zoster: Protocol for a Randomized Controlled Trial
Background Postherpetic neuralgia (PHN) affects approximately 30% of individuals with herpes zoster (HZ), with approximately 80% of cases occurring in individuals aged 50 years or older. PHN represents a major clinical challenge due to its chronicity and impact on quality of life. Current treatments for acute HZ pain h...