The primary focus of Myositis Support and Understanding is muscle diseases which are referred to as “Idiopathic Inflammatory Myopathies” or “Acquired Myopathies,” meaning muscle diseases which are typically not inherited and are caused by the immune system attacking muscles, connective tissue, blood vessels, and/or the skin.

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MSU is a charitable organization with 501(c)(3) tax-exempt status. Federal ID #47-4570748.

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