Muscle Disorders
Educational information. Individual clinical review of this presentation by Dr. Ehsan is not yet documented. It does not replace personal medical evaluation.
Source: MedlinePlus, National Library of Medicine. Read the original source
MedlinePlus data edition September 26, 2026. Imported September 27, 2026. These dates do not indicate a new clinical review of the article.
Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.
Causes of muscle disorders include:
- Injury or overuse, such as sprains or strains, cramps or tendinitis
- A genetic disorder, such as muscular dystrophy
- Some cancers
- Inflammation, such as myositis
- Diseases of nerves that affect muscles
- Infections
- Certain medicines
Sometimes the cause of muscle disorders is unknown.
Symptoms, tests and care options
Further reading selected by MedlinePlus. Links open the original organizations’ websites.
- Creatine Kinase · National Library of Medicine
- Electromyography (EMG) and Nerve Conduction Studies · National Library of Medicine
- Musculoskeletal MRI · Radiological Society of North America
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For a life-threatening emergency, call 911 in the U.S. or your local emergency number.
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