Differences between Contralatral hemiballismus versus Huntington’s disease

Question 1

What are the properties of Contralatral hemiballismus?

Answer 1

Contra hemiballismus—sudden onset; no mood changes; lesion in subthalamic nucleus (nucleus of subthalamus of the basal ganglia)

Question 2

What are the properties of Huntington’s disease?

Answer 2

Huntington’s disease–gradual onset; genetic (aut. Dominant CAG trinucleotide repeat in huntingtin gene) chorea + mood changes; lesions particularly in the basal ganglia component, the striatum (caudate nucleus + putamen )