9-year-old Boy in Pediatrics — 9yo Child | Paediatric Neurology | SMLE Q#17347
SMLE Question #17347
Pediatrics
Paediatric Neurology
Last updated: February 2026
A 9-year-old boy has 3 months of progressive fatigue and generalized weakness that worsens late in the day. In the evening, he struggles to keep his eyes open and has bilateral ptosis that improves after rest. There is no muscle wasting. Deep tendon reflexes are normal, and sensation is intact. Which of the following is the most appropriate diagnostic test to confirm the suspected diagnosis?
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