Mayo Clinic Health Manager
Get free personalized health guidance for you and your family.
Get Started
About our e-newsletters
- Free e-newsletters
- Mayo Clinic expertise
- We do not share your e-mail address
Housecall, our weekly general-interest e-newsletter, keeps you up to date on a wide variety of health topics with timely, reliable, practical information, recipes, blogs, questions and answers with Mayo Clinic experts and more. Our biweekly topic-specific e-newsletters also include blogs, questions and answers with Mayo Clinic experts, and other useful information that will help you manage your health.
Housecall Archives
Mayo Clinic Housecall
Stay up to date on the latest health information.
What you get
- Free weekly e-newsletter
- Mayo Clinic expertise
- Recipes, tools and other helpful information
- We do not share your e-mail address
Definition
By Mayo Clinic staffPolymyositis (pol-e-mi-o-SI-tis) is an uncommon connective tissue disease. It's a type of inflammatory myopathy, which is characterized by muscle inflammation and weakness. The most noticeable characteristic of polymyositis is weakness of the skeletal muscles, which control movement.
Polymyositis can occur at any age, but it mostly affects adults sometime between their 30s and 50s. It's more common in blacks than in whites, and women are affected more often than men are. Polymyositis signs and symptoms usually develop gradually, over weeks or months.
Periods of remission in polymyositis, during which symptoms improve spontaneously, rarely occur. However, treatment can improve your muscle strength and function.
- NINDS polymyositis information page. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/polymyositis/polymyositis.htm. Accessed May 21, 2009.
- Baer A. Advances in the therapy of idiopathic inflammatory myopathies. Current Opinion in Rheumatology. 2006;18:236.
- Dalakas MC. Inflammatory disorders of muscle: Progress in polymyositis, dermatomyositis and inclusion body myositis. Current Opinion in Neurology. 2004;17:561.
- Miller ML. Clinical manifestations and diagnosis of adult dermatomyositis and polymyositis. http://www.uptodate.com/home/index.html. Accessed May 8, 2009.
- Di Martino SJ, et al. Newer therapeutic approaches: Inflammatory muscle disorders. Rheumatic Disease Clinics of North America. 2006;32:121.
- Koski CL, et al. Intravenous immunoglobulin use for neurologic diseases. Journal of Infusion Nursing. 2006;29:S21.
- Amato AA, et al. Treatment of idiopathic inflammatory myopathies. Current Opinion in Neurology. 2003;16:569.
- Oddis CV. Current approach to the treatment of polymyositis and dermatomyositis. Current Opinion in Rheumatology. 2000;12:492.
- Walker UA. Imaging tools for the clinical assessment of idiopathic inflammatory myositis. Current Opinion in Rheumatology. 2008;20:656.
- Miller ML, et al. Initial treatment of dermatomyositis and polymyositis in adults. http://www.uptodate.com/home/index.html. Accessed May 8, 2009.
- Miller ML, et al. Treatment of recurrent and resistant polymyositis and dermatomyositis. http://www.uptodate.com/home/index.html. Accessed June 15, 2009.
