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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