Video Segment1.
Neurological Examination at First Visit.
Neurological examination demonstrates mild dysdiadochokinesia and moderately impaired tandem gait.
Video Segment2.
Neurological Examination at Follow-up after 6 Months.
The patient has worsening neurological features with severely impaired tandem gait and severe difficulty in balancing on one foot such that he nearly falls.

Figure 1
Magnetic Resonance Imaging of Brain Sagittal Section of T1 Sequence Showing Cerebellar Cortical Atrophy.
No white matter changes in the cerebellar peduncle
