Picture of Herpes Zoster
Herpes zoster is an infection caused by the varicella virus. The first time this virus causes an infection, it is known as chickenpox. After a chickenpox infection, the virus remains dormant in the nervous system. If the virus reactivates, the subsequent outbreak is known as shingles. When the virus reactivates, it causes extremely itchy and painful blisters on the area of the skin associated with the affected nerve. Common areas for shingles outbreaks include around the waist in a band pattern or in a defined area on just one side of the body.
Text Reference: "Shingles." National Institute of Neurological Disorders and Stroke.