whether second dose is needed

Shingles, also known as herpes zoster, is a painful skin rash caused by the varicella-zoster virus, the same virus that causes chickenpox. The risk of developing shingles increases with age, as the virus can reactivate in individuals who have previously had chickenpox. One of the complications associated with shingles is the potential development of postherpetic neuralgia, a condition characterized by persistent nerve pain in the area where the shingles rash occurred.