Ramsay Hunt syndrome (RHS) is a complication of shingles. It is the name given to describe the symptoms of a shingles infection affecting the facial nerve. Shingles is caused by the same virus that causes chickenpox (varicella zoster virus, or VZV). As a result of this infection, the facial nerve becomes inflamed and irritated.
https://www.facialpalsy.org.uk/causesanddiagnoses/ramsay-hunt-syndrome/

