TY - CHAP M1 - Book, Section TI - The Inflammatory, Metabolic, and Toxic Myopathies A1 - Tian, Cuixia A1 - Zygmunt, Alexander M. A2 - Hershey, Andrew D. PY - 2023 T2 - CURRENT Diagnosis & Treatment Pediatric Neurology AB - Myopathies are a heterogeneous group of disorders that affect the structure, function, or both structure and function of muscle fibers manifested most commonly by weakness in the patient. They may also present with either positive myopathic symptoms, such as cramps, contracture, hypertrophy, myalgia, or myoglobinuria, or negative myopathic symptoms, such as exercise intolerance, fatigue, muscle atrophy, or weakness. SN - PB - McGraw Hill Education CY - New York, NY Y2 - 2024/03/28 UR - neurology.mhmedical.com/content.aspx?aid=1195238333 ER -