19th June 2023

A 35-year-old-man presents to A&E with a 1-hour history of excruciating pain around his left eye, with associated redness

A 35-year-old-man presents to A&E with a 1-hour history of excruciating pain around his left eye, with associated redness and tearing of the eye. There is no history of trauma to the eye. He has not experienced anything like this before. He is very restless with pain and requesting urgent analgesia.

Which one of the following options is the likely diagnosis?