Snapshot A 45-year-old woman presents to the emergency room for a rash on her face. She reports that this rash started as a small flat red rash yesterday but progressed to a very painful rash. She also reports some blurry vision in her right eye. She has a past medical history of lupus and is on long-term steroids. On physical exam, she has an extensive vesicular rash on the right side of her face involving her nose and eyes. She is admitted into the hospital for antiviral therapy, and ophthalmology is consulted. Introduction Classification login to view 7 more bullets Prevention login to view 5 more bullets Epidemiology Demographics login to view 3 more bullets Risk factors login to view 3 more bullets ETIOLOGY Pathogenesis login to view 4 more bullets Presentation Symptoms login to view 2 more bullets Physical exam login to view 8 more bullets Studies Labs login to view 4 more bullets Making the diagnosis login to view 2 more bullets Differential Herpes simplex virus login to view 2 more bullets Contact dermatitis login to view 2 more bullets Treatment Management approach login to view 1 more bullet Medical login to view 17 more bullets Complications Disseminated disease login to view 2 more bullets Post-herpetic neuralgia login to view 2 more bullets Fetal complications login to view 3 more bullets Vision loss, corneal anesthesia, and keratitis from herpes zoster opthalmicus Prognosis Complete healing may take more > 1 month