Hyperammonemic Encephalopathy due to Valproic Acid and Topiramate Interaction

Valproic acid-induced hyperammonemic encephalopathy is a rare yet serious adverse drug reaction. Medication interactions such a valproic acid and topiramate can precipitate an event. We present the case of a 52-year-old female that presented with acute mental status change and hypersomnolence due to...

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Main Authors: Jennifer D. Twilla, Andrew S. Pierce
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Case Reports in Psychiatry
Online Access:http://dx.doi.org/10.1155/2014/410403
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author Jennifer D. Twilla
Andrew S. Pierce
author_facet Jennifer D. Twilla
Andrew S. Pierce
author_sort Jennifer D. Twilla
collection DOAJ
description Valproic acid-induced hyperammonemic encephalopathy is a rare yet serious adverse drug reaction. Medication interactions such a valproic acid and topiramate can precipitate an event. We present the case of a 52-year-old female that presented with acute mental status change and hypersomnolence due to hyperammonemia caused by a valproic acid derivative. The patient improved after withdrawal of the offending medications and treatment with lactulose. Clinicians should remain hypervigilant in monitoring for valproic acid-induced hyperammonemic encephalopathy and risk factors such as polypharmacy.
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spelling doaj-art-0f9ba94dba664b57a05f914013e77a282025-08-20T03:54:28ZengWileyCase Reports in Psychiatry2090-682X2090-68382014-01-01201410.1155/2014/410403410403Hyperammonemic Encephalopathy due to Valproic Acid and Topiramate InteractionJennifer D. Twilla0Andrew S. Pierce1Methodist University Hospital, 1265 Union Avenue Memphis, TN 38104, USAMethodist University Hospital, 1265 Union Avenue Memphis, TN 38104, USAValproic acid-induced hyperammonemic encephalopathy is a rare yet serious adverse drug reaction. Medication interactions such a valproic acid and topiramate can precipitate an event. We present the case of a 52-year-old female that presented with acute mental status change and hypersomnolence due to hyperammonemia caused by a valproic acid derivative. The patient improved after withdrawal of the offending medications and treatment with lactulose. Clinicians should remain hypervigilant in monitoring for valproic acid-induced hyperammonemic encephalopathy and risk factors such as polypharmacy.http://dx.doi.org/10.1155/2014/410403
spellingShingle Jennifer D. Twilla
Andrew S. Pierce
Hyperammonemic Encephalopathy due to Valproic Acid and Topiramate Interaction
Case Reports in Psychiatry
title Hyperammonemic Encephalopathy due to Valproic Acid and Topiramate Interaction
title_full Hyperammonemic Encephalopathy due to Valproic Acid and Topiramate Interaction
title_fullStr Hyperammonemic Encephalopathy due to Valproic Acid and Topiramate Interaction
title_full_unstemmed Hyperammonemic Encephalopathy due to Valproic Acid and Topiramate Interaction
title_short Hyperammonemic Encephalopathy due to Valproic Acid and Topiramate Interaction
title_sort hyperammonemic encephalopathy due to valproic acid and topiramate interaction
url http://dx.doi.org/10.1155/2014/410403
work_keys_str_mv AT jenniferdtwilla hyperammonemicencephalopathyduetovalproicacidandtopiramateinteraction
AT andrewspierce hyperammonemicencephalopathyduetovalproicacidandtopiramateinteraction