Idiopathic inflammatory myopathies: one year in review 2025

Idiopathic inflammatory myopathies (IIMs) are a heterogeneous group of autoimmune diseases characterised by skeletal muscle inflammation and frequently by involvement of other organs, in particular lung and skin, but also joints, heart and gastrointestinal tract. Although they are rare diseases, the literature on IIMs has been growing rapidly and many studies have been published in order to clarify pathogenesis and to better define diagnosis, clinical manifestations (muscular and extra-muscular) and treatment. The purpose of this review article is to summarise the most relevant contributions published over the last year on this topic.