NEW YORK (Reuters Health)—Ankylosing spondylitis (AS), axial spondyloarthritis (SpA) and inflammatory back pain are common in inflammatory bowel disease (IBD) patients two decades after IBD diagnosis, according to findings from the IBSEN study1. Doctors should know IBD patients are at risk of inflammatory back problems, and refer them to a rheumatologist when appropriate, Dr. Alvilde Ossum…