In this issue of Rheumatic Disease Clinics , guest editors Drs. Julie J. Paik and Tahseen Mozaffar bring their considerable expertise to the topic of Myositis . Top experts explore key topics, including autoantibodies in myositis: can they predict disease course?; classification criteria in idiopathic inflammatory myopathies: is it time for an update?; diagnostic evaluation for myositis and their pitfalls; updated diagnostic criteria in IBM; and more. Contains 14 relevant, practice-oriented topics including emerging treatments in IBM; recent advances in exercise therapy for myositis; promising treatments in juvenile dermatomyositis; mythology of polymyositis; and more Provides in-depth clinical reviews on myositis , offering actionable insights for clinical practice Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.