MYOPATHIES

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Definition

Myopathic changes are weakness or biopsy results that suggest a muscle disorder, such as muscular dystrophy.

Symptoms

The main symptom is weakness (for example, when walking up stairs).

Signs and tests

A tissue sample (biopsy) looked at under a microscope will show changes to the muscle.

Reviewer Info: Luc Jasmin, MD, PhD, Departments of Anatomy & Neurological Surgery, University of California, San Francisco, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc., 02/13/2008