A 15-year-old girl presented with a history of a severe headache and retro-orbital pain causing sleep disturbance of 1-month duration. It was followed by double vision and nonprojectile vomiting and mild deviation of a right side of the mouth. There was no history of ear pain or discharge from the ear, taste disturbance, or tingling sensation over the face. Examination She had vesicular eruptions over the left nasolabial area with an obvious deviation of the angle of mouth to the right side, decreased closure on the left eye on maximal effort, and absence of creases over the forehead on frowning.

She also had left-sided lateral rectus palsy. Ear examination was within normal limits (image attached) What can be the diagnosis for this patient? *This case is from Docplexus editorial team for educative purpose only Source: Cases in ENT Stay connected, the answer will be posted in 48 hrs