Myopathic changes are weakness or biopsy results that suggest a muscle disorder, such as muscular dystrophy.
The main symptom is weakness.
Signs and tests
An electromyogram can confirm the presence of a myopathy.
Sometimes, a muscle biopsy is done. This allows a tissue sample to be examined under a microscope and may confirm a specific disease.
Barohn RJ. Muscle diseases. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 447.
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Luc Jasmin, MD, PhD, Department of Neurosurgery at Cedars-Sinai Medical Center, Los Angeles, and Department of Anatomy at UCSF, San Francisco, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.