A 56-year-old man has painful weeping rashes over the upper eyelid and forehead for the last 2 days along with ipsilateral acute punctuate keratopathy. About a year back, he had chemotherapy for Non-Hodgkin's lymphoma. There is no other abnormality. Which of the following is the most likely diagnosis?

It is a case of infection with Herpes Zoster. The point which leaves no doubt about the diagnosis of Herpes zoster Painful (unilateral) rashes over upper eyelid and forehead H/O chemotherapy for Non-hodgkin's lymphoma Ipsilateral acute punctate keratopathy Herpes infections are characterized by pain and its occurrence in an immunocompromised patient. Patients with Hodgkin's disease and Non-Hodgkins lymphoma are at great risk of developing progressive herpes zoster.