The risk of developing PHN increases with age. In patients with persistent pain following rash resolution, pain and temperature sensation are hyper-acute, leading to severe pain even with light touch (allodynia) or episodes of unpredictable shooting or stabbing pain. PHN is a clinical diagnosis. Neuralgiform symptoms can persist from weeks to a lifetime.
Related topics: varicella, disseminated herpes zoster
B02.29 – Other postherpetic nervous system involvement
2177002 – Postherpetic neuralgia
Differential Diagnosis & Pitfalls