A 40 year-old female whop was recovering from influenza, dev…

A 40 year-old female whop was recovering from influenza, developed pain and itching over the left side of her forehead. Subsequently, the skin above her left eye and on the bridge of her nose became reddened and a vesicular rash developed. She had no rash below her eye, or over her lips or jaw. The medical history revealed that she had chicken-pox when she was eight years old. Which nerve is most likely involved?