MS-2355

MS-2355

A 54-year-old man visits his GP with his son after experiencing a fall at home. He has a history of alcoholism and is currently being treated by the gastroenterology team.

In the past few days, he has been feeling increasingly unsteady on his feet and has fallen once, but denies any head injury. His son made the appointment as he has noticed his father becoming more forgetful over the past week.

During the examination, the patient exhibits reduced sensation in his lower legs and nystagmus when looking to the side.

What is the most probable underlying diagnosis responsible for his recent symptoms?