system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 65-year-old man presents to your clinic after falling several times in the past few months. On examination, his most notable findings are an unstable, wide-based gait and marked retropulsion. He does have bradykinesia with masked facies and dysahria. You find no evidence of cogwheeling or resting tremor. His symptoms do not respond to levodopa/carbidopa. During the next few months, his eye movements are notable for the slowing of veical saccades and fast phases. What is the most likely diagnosis?
assistant
The correct answer is  Option A - Ruled out as resting tremors are absent & disease is ruled out as it is a ATYPICAL PARKINSONISM disease. Option B- since in the question its mentioned regarding the veical gaze of the patient, it's the most appropriate option. Option C- Ruled out as autonomic insufficiency isn't mentioned in the question. Option D- Manifestation of STROKE related to Pons with VIth nerve palsy.