Inclusion body myositis (IBM) is a slowly progressing muscle disease of unknown cause that currently has no effective treatment. IBM is the most common inflammatory myopathy in older individuals, with a rising prevalence of 18.2 per 100,000 in adults older than 50.1,2 The disease characteristically affects the quadriceps and finger flexors, and in later stages…
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…