Putaminal hemorrhage accompanied by hemichorea-hemiballism.

Exploration of motor cortex excitability in a diabetic patient with hemiballism-hemichorea

“…[3][4][5][6] One distinct example is hemiballismhemichorea associated with poorly controlled diabetes mellitus. [7][8][9][10][11][12][13] These patients typically show a high intensity signal in the putamen and sometimes in the head of the caudate nucleus on T1-weighted magnetic resonance imaging (MRI) scans 7,13 while the anterior limb of the internal capsule remains unaffected. 7 The nature of this high intensity signal is not entirely clear but most likely it reflects hemosiderin as a consequence of mild hemorrhagic ischemia in the setting of hyperglycemia.…”

Hemicoréia-hemibalismo associado a granuloma criptocócico em paciente com SIDA: relato de caso

“…A intensidade dos sintomas neurológicos está na dependência direta do grau de hiperosmolaridade secundária à hiperglicemia. A fisiopatologia proposta é a de que a ausência de corpos cetônicos na vigência deste distúrbio metabólico (motivo pelo qual esta ocorrência é notada principalmente em idosos) impede que o GABA seja utilizado como fonte alternativa de energia, induzindo lesão aos núcleos subtalâmicos [9][10][11] .…”

Clinical Reasoning: A 52-year-old woman with subacute hemichorea

“…Ischemia seems to be a likely etiologic factor, but neural injury from hyperglycemia may also be due to subacute hemorrhage. 6 Although one autopsy report of a patient with hyperglycemic hemichorea showed basal ganglia gliosis without hemorrhage, 7 a more recent series demonstrated unilateral focal microhemorrhages. 8 It seems, therefore, that a spectrum of pathophysiology underlying this disorder likely exists.…”