Abstract Details

Title A Case Report of Abdominal Myoclonus Following Anterior Cerebral Artery Stroke

Topic Movement Disorders

Presentation(s) P9 - Poster Session 9 (5:00 PM-6:00 PM)

Poster/Presentation
Number 16-013

Objective This case highlights cortical abdominal myoclonus as a rare presentation of anterior cerebral artery (ACA) stroke, emphasizing the importance of early recognition for timely treatment.

Background

Post-stroke movement disorders are rare, with myoclonus being a particularly uncommon manifestation. Notably, abdominal myoclonus following ACA infarction has not been reported.

Design/Methods

We present a case report of post-stroke myoclonus limited to the abdominal muscles following ACA infarction.

Results A 75-year-old man presented with acute right-sided weakness and involuntary, rhythmic contractions of the abdominal muscles, predominantly on the right side. Brain magnetic resonance imaging (MRI) revealed an acute left ACA infarction involving the precentral gyrus. Scalp electroencephalography (EEG) showed no epileptiform activity. The rhythmic abdominal contractions were attributed to abdominal myoclonus secondary to acute cortical infarction. The abdominal myoclonus resolved quickly after administration of intravenous levetiracetam and did not recur. Levetiracetam was continued for seven days after discharge and then discontinued, with no recurrence of myoclonus.

Conclusions Abdominal myoclonus can be a manifestation of acute ischemic stroke involving the frontoparietal regions, where the abdominal wall is represented within the motor and somatosensory homunculus. Epileptiform abnormalities on ictal or interictal EEG may not be present. Prompt treatment with an antiepileptic medication, such as levetiracetam, may improve the outcome.

Authors/Disclosures
Ksenia Nokhrina, MD (Work) PRESENTER	Dr. Nokhrina has nothing to disclose.
Guillaume Lamotte, MD	Dr. Lamotte has nothing to disclose.
Jana Wold, MD (University of Utah Medical Center)	Dr. Wold has nothing to disclose.

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