Shingles: An Overview

Shingles is caused by the reactivation of the varicella zoster virus (VZV), which is the same virus that causes varicella (chickenpox). This usually occurs decades after the initial chickenpox infection. The reactivation of this virus causes a painful rash with clusters of fluid-filled blisters. Shingles is not contagious, but before the blisters dry, the virus-filled fluid can transmit chickenpox to someone who has not been previously exposed to the virus and comes in close contact with the open rash. Other symptoms of shingles can include fever, headache, chills, and an upset stomach.

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