Post-herpetic neuralgia (PHN) is an important though common complication of herpes zoster (HZ) and can cause long-lasting pain and disability.

Current treatment for PNH is limited by efficacy and safety profiles of individual therapies.

Recent evidence points to topical local anesthetics as an effective and safe alternative to conventional therapy.

Film-forming bupivacaine may offer a durable and safe option for this otherwise difficult to treat syndrome.