Idiopathic Inflammatory Myopathies (IIM's)



RASH + MUSCLE WEAKNESS → Consider idiopathic inflammatory myopathies (IIM's)



 • Overlap Myositis

    Any inflammatory myopathy that occurs in association with features of another autoimmune connective tissue disease like antisynthetase syndrome

 • Inclusion body myositis

    Inflammatory myopathy affecting both the proximal and distal skeletal muscles

 • NAM or IMNM

    Severe proximal weakness, myofiber necrosis with minimal inflammatory cell infiltrate on muscle biopsy, and infrequent extra-muscular involvement.



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