The idiopathic inflammatory myopathies (IIM) encompass eight categories: 1) dermatomyositis (DM) in adults, 2) juvenile dermatomyositis, 3) amyopathic DM, 4) cancer-associated DM, 5) polymyositis, 6) immune-mediated necrotizing myopathy, 7) inclusion body myositis, and 8) overlap myositis.1 These categories help classify the myopathies based on clinical and histologic features. The incidence of IIM is estimated at…
A recent study details the autoantibodies of patients with myositis, confirming most patients carry these antibodies. The results also describe how myositis-specific autoantibodies can be used to identify distinct clinical subsets of idiopathic inflammatory myopathy…
CHICAGO—At Hot Topics in Myositis, a session at the 2018 ACR/ARHP Annual Meeting, three experts discussed new classification criteria for idiopathic inflammatory myopathies (IIM) and offered practical primers on overlap myositis conditions and inclusion body myositis (IBM). New Myositis Classification Criteria After a 10-year development process, the new EULAR/ACR Classification Criteria for Adult and Juvenile…
In recent years, scientists and clinicians have learned a great deal about autoantibodies occurring in idiopathic inflammatory myopathies (IIMs). These new discoveries have reshaped our understanding of distinct clinical phenotypes in IIMs. Scientists continue to learn more about how these autoantibodies shape pathophysiology, diagnosis, disease monitoring, prognosis and optimum treatment. Moving forward, these autoantibodies will…