acquired skeletal muscle disease acquired idiopathic inflammatory myopathy https://www.malacards.org/card/acquired_idiopathic_inflammatory_myopathy GARD:0009128 idiopathic inflammatory myopathy, familial idiopathic inflammatory myositis Orphanet:98482 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. ICD9:359.79 icd11.foundation:464294586 IMM MONDO:0020122 idiopathic inflammatory myopathies IIm idiopathic inflammatory myopathy idiopathic disease