Clinical Reasoning: A 55-Year-Old Woman With a Hyperkinetic Movement Disorder, External Ophthalmoplegia, and Myopathy.
William Leduc, Angela Russell, Yasamin Mahjoub et al.
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Case in brief
A 55-year-old woman was evaluated for an 8-year history of hyperkinetic movements. Her examination and clinical picture also included mild ataxia, spasticity in the lower limbs, external ophthalmoplegia, and myopathy. The report focuses on the diagnostic reasoning prompted by this combination of movement abnormalities and systemic neuromuscular findings, including development of a comprehensive differential diagnosis. The abstract does not state a final diagnosis, specific investigations, or how the presentation resolved.
What made this case unusual
The combination of hyperkinetic movements with ataxia, lower-limb spasticity, external ophthalmoplegia, and myopathy creates a complex neurologic presentation requiring a broad differential.
Diagnostic / clinical pearl
When multiple movement disorders coexist with ocular motor and muscle findings, consider the full neurologic and systemic presentation rather than evaluating each feature in isolation.