Topiramate-Induced Coma in a 39-Year-Old Female Patient: Burst Suppression on EEG

Reported cases of topiramate ingestion resulting in coma and generalized convulsive status epilepticus are very rare. Such a phenomenon of a relatively safe antiepileptic drug (AED) causing serious neurological compromise should be carefully reviewed. A 39-year-old female with a history of uncontrolled epilepsy, migraine headaches, hypothyroidism, obsessive-convulsive disorder, and depression presented with generalized tonic-clonic seizures that progressed to status epilepticus and coma thereafter. She was intubated due to a depressed level of consciousness and transferred afterward to our hospital. Electroencephalography (EEG) demonstrated a burst suppression pattern without receiving any sedating agents. The level of consciousness improved on the fourth day, and she achieved complete neurological recovery by the sixth day of hospitalization. She was offered AEDs and supportive therapy during her admission. Upon further investigation into the cause of her seizures, it was discovered that she had ingested a large dose of topiramate in a suicide attempt.