, the virus becomes dormant in the body. Herpes zoster occurs as a result of the virus re-emerging after many years.
The cause of the re-activation is usually unknown, but seems to be linked to aging, stress, or an impaired immune system.So stress and anxiety can reactivate the virus.
Hope it helps. Take care and pls do keep me posted on how you are doing or if you have any additional queries.Kind regards.