Muscle atrophy is the wasting or loss of muscle tissue.
There are two types of muscle atrophy.
Examples of diseases affecting the nerves that control muscles:
Although people can adapt to muscle atrophy, even minor muscle atrophy usually causes some loss of movement or strength.
Some muscle atrophy occurs normally with aging. Other causes may include:
An exercise program (under the direction of a therapist or doctor) is recommended to help treat muscle atrophy. This may include exercises in water to reduce the muscle workload, and other types of rehabilitation.
People who cannot actively move one or more joints can do exercises using braces or splints.
Call your doctor for an appointment if you have unexplained or long-term muscle loss. You can often see this when you compare one hand, arm, or leg to the other.
The health care provider will perform a physical examination and ask questions about your medical history and symptoms, including:
The doctor will look at your arms and legs and measure muscle size to try to determine which nerve or nerves are affected.
Tests that may be performed include:
Muscle wasting; Wasting; Atrophy of the muscles
Chinnery PF. Muscle Diseases. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011: chap 429.
Updated 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, CA, 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. Health Solutions, Ebix, Inc.
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