Diagnosis of Exclusion: A Case Report of Probable Glatiramer Acetate-Induced Eosinophilic Myocarditis

Importance. Medication-induced eosinophilia is an acknowledged, often self-limiting occurrence. Glatiramer acetate, a biologic injection used in the management of relapsing-remitting multiple sclerosis, is widely regarded as a safe and effective medication and lists eosinophilia as an infrequent sid...

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Main Authors: Christopher J. Michaud, Heather M. Bockheim, Muhammad Nabeel, Timothy E. Daum
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Case Reports in Neurological Medicine
Online Access:http://dx.doi.org/10.1155/2014/786342
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author Christopher J. Michaud
Heather M. Bockheim
Muhammad Nabeel
Timothy E. Daum
author_facet Christopher J. Michaud
Heather M. Bockheim
Muhammad Nabeel
Timothy E. Daum
author_sort Christopher J. Michaud
collection DOAJ
description Importance. Medication-induced eosinophilia is an acknowledged, often self-limiting occurrence. Glatiramer acetate, a biologic injection used in the management of relapsing-remitting multiple sclerosis, is widely regarded as a safe and effective medication and lists eosinophilia as an infrequent side effect in its package insert. Contrary to reports of transient, benign drug-induced eosinophilia, we describe a case of probable glatiramer acetate-induced eosinophilia that ultimately culminated in respiratory distress, shock, and eosinophilic myocarditis. Observations. A 59-year-old female was admitted to the hospital after routine outpatient labs revealed leukocytosis (43,000 cells/mm3) with pronounced hypereosinophilia (63%). This patient had been using glatiramer acetate without complication for over 10 years prior to admission. Leukocytosis and hypereosinophilia persisted as a myriad of diagnostic evaluations returned negative, ultimately leading to respiratory depression, shock, and myocarditis. Glatiramer acetate was held for the first time on day 6 of the hospital stay with subsequent resolution of leukocytosis, hypereosinophilia, respiratory distress, and shock. Conclusions and Relevance. Glatiramer acetate was probably the cause of this observed hypereosinophilia and the resulting complications. Reports of glatiramer-induced eosinophilia are rare, and few case reports regarding medication-induced hypereosinophilia describe the severe systemic manifestations seen in this patient.
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spelling doaj-art-ea8eabe9f692402e80fa3ba33192b20c2025-02-03T00:59:11ZengWileyCase Reports in Neurological Medicine2090-66682090-66762014-01-01201410.1155/2014/786342786342Diagnosis of Exclusion: A Case Report of Probable Glatiramer Acetate-Induced Eosinophilic MyocarditisChristopher J. Michaud0Heather M. Bockheim1Muhammad Nabeel2Timothy E. Daum3Department of Pharmacy, Spectrum Health, 100 Michigan Street NE, MC 001, Grand Rapids, MI 49503, USADepartment of Pharmacy, Spectrum Health, 100 Michigan Street NE, MC 001, Grand Rapids, MI 49503, USAInternal Medicine, Spectrum Health, Grand Rapids, MI 49503, USAPulmonary Critical Care, Spectrum Health Medical Group, Grand Rapids, MI 49503, USAImportance. Medication-induced eosinophilia is an acknowledged, often self-limiting occurrence. Glatiramer acetate, a biologic injection used in the management of relapsing-remitting multiple sclerosis, is widely regarded as a safe and effective medication and lists eosinophilia as an infrequent side effect in its package insert. Contrary to reports of transient, benign drug-induced eosinophilia, we describe a case of probable glatiramer acetate-induced eosinophilia that ultimately culminated in respiratory distress, shock, and eosinophilic myocarditis. Observations. A 59-year-old female was admitted to the hospital after routine outpatient labs revealed leukocytosis (43,000 cells/mm3) with pronounced hypereosinophilia (63%). This patient had been using glatiramer acetate without complication for over 10 years prior to admission. Leukocytosis and hypereosinophilia persisted as a myriad of diagnostic evaluations returned negative, ultimately leading to respiratory depression, shock, and myocarditis. Glatiramer acetate was held for the first time on day 6 of the hospital stay with subsequent resolution of leukocytosis, hypereosinophilia, respiratory distress, and shock. Conclusions and Relevance. Glatiramer acetate was probably the cause of this observed hypereosinophilia and the resulting complications. Reports of glatiramer-induced eosinophilia are rare, and few case reports regarding medication-induced hypereosinophilia describe the severe systemic manifestations seen in this patient.http://dx.doi.org/10.1155/2014/786342
spellingShingle Christopher J. Michaud
Heather M. Bockheim
Muhammad Nabeel
Timothy E. Daum
Diagnosis of Exclusion: A Case Report of Probable Glatiramer Acetate-Induced Eosinophilic Myocarditis
Case Reports in Neurological Medicine
title Diagnosis of Exclusion: A Case Report of Probable Glatiramer Acetate-Induced Eosinophilic Myocarditis
title_full Diagnosis of Exclusion: A Case Report of Probable Glatiramer Acetate-Induced Eosinophilic Myocarditis
title_fullStr Diagnosis of Exclusion: A Case Report of Probable Glatiramer Acetate-Induced Eosinophilic Myocarditis
title_full_unstemmed Diagnosis of Exclusion: A Case Report of Probable Glatiramer Acetate-Induced Eosinophilic Myocarditis
title_short Diagnosis of Exclusion: A Case Report of Probable Glatiramer Acetate-Induced Eosinophilic Myocarditis
title_sort diagnosis of exclusion a case report of probable glatiramer acetate induced eosinophilic myocarditis
url http://dx.doi.org/10.1155/2014/786342
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AT muhammadnabeel diagnosisofexclusionacasereportofprobableglatirameracetateinducedeosinophilicmyocarditis
AT timothyedaum diagnosisofexclusionacasereportofprobableglatirameracetateinducedeosinophilicmyocarditis