What is shingles?
Shingles is a reactivation of the chickenpox virus. After an initial chickenpox infection, the virus remains in the human nervous system and can lead to herpes zoster in older or immunocompromised individuals. Herpes zoster is characterized by a localized, and often burning rash. Rarely, a so-called post-herpetic neuralgia can be triggered, which is characterized by a local feeling of severe pain that can last for several months, and occasionally years.