Both chicken pox and shingles are caused by the same virus. After a person has had chicken pox, the virus remains in the body permanently, but inactive. About one-third of all people who have been infected with chicken pox later develop shingles.
Shingles usually starts as a rash with blisters and pain. The rash and pain usually occur in a band on one side of the body, or clustered on one side of the face.
It is recommended all adults age 60 and older get a dose of shingles vaccine. One dose is considered a lifetime immunity.