Choreiform gait
A choreiform gait, also known as hyperkinetic gait, presents with involuntary movements like:
-Oro-facial dyskinesia, which includes lip-smacking or grimacing
-Involuntary movements are usually present when resting. Yet walking can highlight them.
-Choreic movements of both upper and lower limbs, including dance-like semi-purposeful movements
Causes of this abnormal gait include:
-Wilson’s disease
-Parkinson’s medications
-Basal ganglia disease
-Huntington’s disease
-Sydenham’s chorea
-Cerebral palsy
I am surprised that your list of reasons for gait abnormalities did not include normal pressure hydrocephalus. I started involuntarily shuffling my feet and had diminished stride In my early seventies. When I took Anatomy and Physiology in college, the instructor told us that some people with brain injuries could not stride more than 12 inches when walking. In addition to stride changes, I found it increasingly difficult to organize and reason. I couldn’t put together a report for my work. A CT scan revealed a significantly enlarged third ventricle. I had an ETV performed by image-guided surgery to form a drainage path through scar tissue that blocked the flow of CNS in my third ventricle at OHSU in Portland. I got immediate relief and have no gait or mental confusion symptoms for the last 10 years.