Shingles, also known as zoster or herpes zoster, is a painful skin rash caused by the same virus responsible for chicken pox: the varicella zoster virus. Even if you had chicken pox in the past, you can still contract shingles. That’s because the chicken-pox virus remains in the body, lying dormant in the roots of nerves, and can reactivate many years later. It’s not clear why the virus reawakens — in some people it never does — but researchers believe that the virus is triggered as the immune system weakens with age or in conditions of stress.
Shingles is less contagious than chicken pox and cannot be passed from person to person. However, the varicella zoster virus can be spread from a person with shingles to someone who has never had chicken pox. The unfortunate recipient might develop chicken pox, but not shingles.
The infection can take anywhere from 10 to 21 days to develop after exposure to someone with chicken pox or shingles. People with chicken pox are contagious a couple days before their rash appears and remain so until all their blisters have scabbed. A person with shingles, on the other hand, can only spread their infection while their skin rash is still blistering. They’re not contagious before the blisters occur and are no longer contagious once the rash starts to scab.
To find out about immunization options, visit your health care professional.
