Levetiracetam induced rhabdomyolysis

Abstract

Thirty-three-year-old Caucasian male underwent initiation of levetiracetam following witnessed generalized seizure activity at the same time presenting with a right MCA territory ischemic stroke. He then developed elevated CPK and myalgias are highly suspicious for rhabdomyolysis following levetiracetam. Subsequent improvement noted following complete cessation of medication. At follow-up patient reported complete resolution of hemiparesis and myalgias and no new neurological deficits while tolerating valproic acid. This case exemplifies potential rare adverse effect of levetiracetam. Levetiracetam is an antiepileptic medication effective for both generalized and focal types of epilepsy by affecting a broad spectrum of neurotransmitter release via calcium channels GABA receptors and synaptic vessel protein 2A (SV2A). Typical adverse effects include mild dizziness, headache, nausea, somnolence and sometimes hostility. This case provides further evidence of a rare and potentially life-threatening adverse effect of rhabdomyolysis. Further study is needed to possibly detect the exact mechanism resulting in this rare and dangerous adverse effect.