Idiopathic inflammatory myopathy

Background

• A group of disorders that includes:
  • Dermatomyositis
  • Antisynthetase syndrome
  • Immune-mediated necrotizing myopathy (IMNM)
  • Inclusion body myositis (IBM)
  • Myositis secondary to other rheumatologic diseases

Clinical Manifestations

• Typically characterized by muscle weakness rather than pain