Hemichorea caused by non-ketotic hyperglycemia in a Sri Lankan woman: A case report

Basal ganglia are a subcortical set of nuclei, including the caudate nucleus, putamen, external and internal segments of globus pallidus, and associated structures including substantia nigra and subthalamic nucleus. Complex neuronal networks interconnect the basal ganglia and cortical motor areas. Chorea results due to a dysfunction within this neuronal network [1,2]. This disruption can occur as a result of direct structural damage, degeneration of selective sets of neurons, neurotransmitter receptor blockage, metabolic derangements, drug exposure, genetic mutations, and also due to underlying autoimmune conditions [1].