Recurrent hemichorea with different etiologies in one patient

Area of Science:

• Neurology
• Neuroscience
• Internal Medicine

Background:

• Hemichorea is a unilateral movement disorder typically linked to strokes causing contralateral cerebral lesions.
• Hyperglycemia and other systemic conditions can follow stroke-related hemichorea.
• While recurrent hemichorea from identical causes is documented, cases with distinct etiologies are rare.

Observation:

• This report details a patient experiencing hemichorea from two separate stroke events.
• The patient presented with both stroke-induced hemichorea and subsequent hyperglycemic hemichorea.
• Brain MRI scans differed between the two hemichorea episodes, suggesting distinct underlying pathologies.

Findings:

• The case illustrates hemichorea arising from two different etiological factors in the same patient.
• The distinct MRI findings support the occurrence of separate pathological events leading to hemichorea.
• This presentation challenges the assumption of a single etiology in recurrent hemichorea.

Implications:

• Emphasizes the critical need for comprehensive diagnostic evaluation in all recurrent hemichorea cases.
• Suggests that clinicians should consider multiple potential etiologies, including distinct stroke events and metabolic disturbances.
• Highlights the importance of advanced neuroimaging in differentiating causes of recurrent hemichorea.