Statin-Associated Necrotizing Autoimmune Myositis Complicated by an Uncommon Adverse Effect to Treatment

Statin-associated necrotizing autoimmune myositis (NAM) is an autoimmune condition characterized by severe acute-onset proximal muscle weakness, a very high creatinine kinase (CK) level, and prominent myofiber necrosis and minimal lymphocytic infiltration on muscle biopsy. Unlike self-limited statin...

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Main Authors: Brian M. Fung, Emil R. Heinze, Andrew L. Wong
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Case Reports in Medicine
Online Access:http://dx.doi.org/10.1155/2019/4601304
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author Brian M. Fung
Emil R. Heinze
Andrew L. Wong
author_facet Brian M. Fung
Emil R. Heinze
Andrew L. Wong
author_sort Brian M. Fung
collection DOAJ
description Statin-associated necrotizing autoimmune myositis (NAM) is an autoimmune condition characterized by severe acute-onset proximal muscle weakness, a very high creatinine kinase (CK) level, and prominent myofiber necrosis and minimal lymphocytic infiltration on muscle biopsy. Unlike self-limited statin myopathy, this condition usually requires aggressive immunomodulation therapy to assist recovery and prevent future disability. In this case report, we present a patient who developed progressive muscle weakness after taking atorvastatin for one year. At initial presentation, her CK level was 28,000 U/L. She was diagnosed with statin-associated NAM and started on high-dose intravenous solumedrol, mycophenolate, and intravenous immunoglobulin (IVIG) therapy. However, she subsequently developed acute bilateral vision loss and right side hemineglect; she was diagnosed with posterior reversible encephalopathy syndrome (PRES), thought to be a possible delayed adverse reaction to IVIG. IVIG was discontinued, and the patient was treated with supportive therapy. At six-month follow-up, she had significant improvement in muscle strength and vision.
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spelling doaj-art-ad1998798b5f4e55a487ba5ae093ba432025-02-03T05:59:20ZengWileyCase Reports in Medicine1687-96271687-96352019-01-01201910.1155/2019/46013044601304Statin-Associated Necrotizing Autoimmune Myositis Complicated by an Uncommon Adverse Effect to TreatmentBrian M. Fung0Emil R. Heinze1Andrew L. Wong2UCLA-Olive View Internal Medicine Residency Program, Sylmar, CA, USADivision of Rheumatology, Department of Medicine, Olive View-UCLA Medical Center, Sylmar, CA, USADivision of Rheumatology, Department of Medicine, Olive View-UCLA Medical Center, Sylmar, CA, USAStatin-associated necrotizing autoimmune myositis (NAM) is an autoimmune condition characterized by severe acute-onset proximal muscle weakness, a very high creatinine kinase (CK) level, and prominent myofiber necrosis and minimal lymphocytic infiltration on muscle biopsy. Unlike self-limited statin myopathy, this condition usually requires aggressive immunomodulation therapy to assist recovery and prevent future disability. In this case report, we present a patient who developed progressive muscle weakness after taking atorvastatin for one year. At initial presentation, her CK level was 28,000 U/L. She was diagnosed with statin-associated NAM and started on high-dose intravenous solumedrol, mycophenolate, and intravenous immunoglobulin (IVIG) therapy. However, she subsequently developed acute bilateral vision loss and right side hemineglect; she was diagnosed with posterior reversible encephalopathy syndrome (PRES), thought to be a possible delayed adverse reaction to IVIG. IVIG was discontinued, and the patient was treated with supportive therapy. At six-month follow-up, she had significant improvement in muscle strength and vision.http://dx.doi.org/10.1155/2019/4601304
spellingShingle Brian M. Fung
Emil R. Heinze
Andrew L. Wong
Statin-Associated Necrotizing Autoimmune Myositis Complicated by an Uncommon Adverse Effect to Treatment
Case Reports in Medicine
title Statin-Associated Necrotizing Autoimmune Myositis Complicated by an Uncommon Adverse Effect to Treatment
title_full Statin-Associated Necrotizing Autoimmune Myositis Complicated by an Uncommon Adverse Effect to Treatment
title_fullStr Statin-Associated Necrotizing Autoimmune Myositis Complicated by an Uncommon Adverse Effect to Treatment
title_full_unstemmed Statin-Associated Necrotizing Autoimmune Myositis Complicated by an Uncommon Adverse Effect to Treatment
title_short Statin-Associated Necrotizing Autoimmune Myositis Complicated by an Uncommon Adverse Effect to Treatment
title_sort statin associated necrotizing autoimmune myositis complicated by an uncommon adverse effect to treatment
url http://dx.doi.org/10.1155/2019/4601304
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