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A 68-Year-Old Female with Progressive Pain and Weakness 

A 68-Year-Old Female with Progressive Pain and Weakness
Chapter:
A 68-Year-Old Female with Progressive Pain and Weakness
Author(s):

Jeffrey A. Cohen

, Justin J. Mowchun

, Victoria H. Lawson

, and Nathaniel M. Robbins

DOI:
10.1093/med/9780190491901.003.0027
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date: 24 June 2021

Statin myopathy can occur at anytime during use. This chapter discusses an approach to diagnosis, and emphasizes management considerations, including awareness of statin metabolism by the cytochrome P-450 system. A statin must be discontinued in any patient with evidence of myopathy or myalgias. A muscle biopsy should be done in cases that do not improve clinically or by creatine kinase level. It is important to note that there are cases of apparent statin myopathy which transform into a chronic autoimmune inflammatory myopathy. Antibodies to hydroxymethylglutaryl coenzyme A (HMG-CoA) reductase have recently been identified in the majority of patients with autoimmune statin myopathy and this test may give further weight to treat with immunotherapy.

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