Proprioceptive-induced (stimulus-sensitive) reflex seizures.

A 78-year-old man presented with abnormal right leg movements 2 days after mild traumatic brain injury. He displayed clonic movements of the right leg after a few seconds of voluntary movement of the same leg, lasting about 20 seconds. Brain MRI showed a small subarachnoid hemorrhage in the cerebral convexities. EEG at rest was normal but demonstrated robust epileptiform discharges in the left frontotemporal region (figure) after voluntary movements of the right leg (video 1). Seizures subsided with clobazam 20 mg/d. Reflex seizures have been described with various triggers and etiologies.1,2