Diagnostic criteria put out by medical organizations are supposed to help make diagnosis more straightforward for doctors and patients by defining what the disease is. They should make it easier to study the disease and easier to decide treatment. But what about when those criteria are based on biased assumptions? Research for spondyloarthritis has a history of discrimination affecting women and people of color, and decisions continue to be made from that research. Doctors and researchers need to consider this when making recommendations and designing studies today. Spondyloarthritis Spondyloarthritis (SpA) is a group of autoinflammatory diseases that mostly feature arthritis of the spine which can lead to spinal fusion. The…