Pregnancy outcomes in women with idiopathic inflammatory myopathies: a single-centre study from Sweden

Women with IIM, both before and after diagnosis, had higher proportions of labour induction, caesarean delivery, and instrumental delivery than the general population, regardless of low IIM disease activity at time of pregnancy. The increased proportions of these outcomes also in pre-IIM births may indicate an impact of pro-inflammation and autoimmunity on reproductive health before diagnosis.