Postherpetic neuralgia

[Vania]

Postherpetic neuralgia is chronic pain in areas of skin supplied by nerves infected with herpes zoster (shingles).
Shingles is a painful rash of fluid-filled blisters that is caused by reactivation of the varicella-zoster virus, the virus that causes chickenpox. The varicella-zoster virus is a member of the herpesvirus family (herpesvirus type 3). Shingles is sometimes called herpes zoster. Some people who have had shingles continue to have pain long after the rash has gone away. Such pain is called postherpetic neuralgia, which means nerve pain after herpes.
Exactly why postherpetic neuralgia occurs is not well-understood.
Postherpetic neuralgia occurs most often in older people. As people age, the chance of developing postherpetic neuralgia increases.