International Rhinologic Society Rhinology 0300-0729 2026 04 02 Association of autoimmune diseases with chronic rhinosinusitis in general practices in Germany EN D.U. Seidel Department of Otorhinolaryngology, Facial Plastic Surgery, Klinikum Oberberg, Gummersbach, Germany S. Bode Department of Otorhinolaryngology, Facial Plastic Surgery, Klinikum Oberberg, Gummersbach, Germany K. Kostev Epidemiology, IQVIA, Frankfurt am Main, Germany Journal Article 3411 10.4193/Rhin25.241 Several population-based studies have reported increased prevalence of autoimmune diseases (AID) in patients with chronic rhinosinusitis (CRS). Large-scale datasets from Taiwan demonstrated associations between CRS and conditions such as rheumatoid arthritis, ankylosing spondylitis, polymyositis, psoriasis, Sjögren’s syndrome, and systemic lupus erythematosus (SLE). However, sex-specific patterns have not been investigated.