Idiopathic Inflammatory Myopathy

**Semantic type:** Disease or Syndrome

**Definition:** An umbrella term for diseases which have chronic muscle inflammation and weakness of unknown etiology. The types of idiopathic inflammatory myopathy are further defined by either clinicopathologic criteria or by the presence of certain autoantibodies.

**Synonyms:** - IIM - IIM - Idiopathic Inflammatory Myopathies - Idiopathic Inflammatory Myopathies - Idiopathic Inflammatory Myositis