The biopsychosocial model is well established in chronic low back pain (CLBP) research. Nevertheless, researchers to date have overlooked the biopsychosocial aspects of Inflammatory Low Back pain (ILBP). Most health care providers are biologically oriented in their treatment of ILBP, neglecting its possible multidimensional nature. It is true that people with ILBP may present with more complex pain and physical limitations than those with chronic non-specific low back pain (CNSLBP), but it remains unexplored whether or not these limitations are affected by the same pain factors that affect CNSLBP patients. This study aims to explore and compare the biopsychosocial back pain profiles of adults with ILBP and CNSLBP.