British Society for Rheumatology guideline on management of paediatric, adolescent and adult patients with idiopathic inflammatory myopathy

Authors: Alexander Oldroyd, James B Lilleker, Tania Amin, Octavio Aragon, Katie Bechman, Verna Cuthbert, James Galloway, Patrick Gordon, William J Gregory, Harsha Gunawardena, Michael G. Hanna, David Isenberg, John Jackman, Patrick Kiely, Polly Livermore, Pedro Machado, Sue Maillard, Neil McHugh, Ruth Murphy, Clarissa Pilkington, Athiveeraramapandian Prabu, Phoebe Rushe, Stefan Spinty, Joanne Swan, Hasan Tahir, Sarah Tansley, Paul Truepenny, Yvonne Truepenny, Kishore Warrier, Mark Yates, Charalampia Papadopoulou, Neil A. Martin, Liza McCann, Hector Chinoy, for the British Society for Rheumatology Standards, Audit and Guidelines Working Group - Lara D. Veeken 2022 cited by 140

Idiopathic inflammatory myopathy (IIM) is a multi-system autoimmune condition characterised by muscle inflammation (myositis), interstitial lung disease (ILD), and skin manifestations with an incidence of up to 19 per 1,000,000 person-years in adults and up to 4 per 1,000,000 person-years in children. Estimated UK prevalence (for adult-onset IIM) is 10, 000