Burisch J, et al. - In a nationwide study of the Danish population, researchers studied the occurrence of immune-mediated inflammatory diseases (IMIDs) in relation to onset of inflammatory bowel diseases (IBD) and the effects of concurrent IMIDs on IBD outcomes. They used a nationwide cohort of all people diagnosed with IBD in Denmark from 2007 to 2016 (n = 14,377), including Crohn's disease (CD) or ulcerative colitis (UC). Patients from the general population matched individuals without IBD (controls, n = 71,885). According to findings, 22.5% of patients with IBD also had at least one concurrent IMID in a nationwide study of the Danish population. In patients with CD, the co-occurrence of IMIDs increased the risk of surgery. Psoriasis, asthma, type 1 diabetes, and iridocyclitis were the most common IMIDs observed.