Jeffrey Jednacz, MD

A 38-year-old man presented to the emergency department after experiencing the sudden onset of right upper extremity numbness, heaviness, and loss of coordination, which resolved after 20 minutes. He had 2 similar episodes 19 years and 11 years earlier. Diagnostic evaluation (including MRI of the brain, carotid Doppler ultrasonography, and echocardiography) at the time of the second episode was unrevealing.