Definitions

1. noun

A viral infection characterized by a painful rash, typically affecting the elderly or people with weakened immune systems, caused by the varicella-zoster virus.

“The patient’s doctor diagnosed him with zoster and prescribed medication to alleviate the symptoms.”

2. noun

A type of herpes simplex virus that causes herpes zoster, also known as shingles.

“The dermatologist explained to the patient that her zoster was caused by a reactivation of the varicella-zoster virus.”