Shingles (herpes zoster).

摘要

Shingles, or herpes zoster, is a painful rash caused by the chickenpox virus. The chickenpox virus is also called varicella-zoster. Most people get chickenpox as a child. When the infection is over, the virus stays in the body. Your immune system may weaken as you get older, allowing the chickenpox virus to become active again. This can cause shingles. Most people get it when they are older than 50 years. You can also get it if your immune system is weak from a disease, like HIV infection.