The return of chickenpox A patient’s first encounter with the herpes zoster virus is usually childhood chickenpox. Later in life, the virus may reactivate, causing a rash of small blisters, frequently on the chest or forehead. This second encounter is known as shingles. It is important to see a doctor when herpes zoster occurs on the face because the virus may invade the eye. A doctor will look for elevated pressure in the eye, inflammation and herpes zoster lesions on the surface of the eye. These problems can be treated but they are sometimes difficult to manage, so careful treatment and follow-up are required. New oral antivirus medications can provide patients with a quicker, more complete recovery.