Interview by Paul Salfen Imagine Dragon's Dan Reynold's is the face of A MONSTER PAIN IN THE AS Campaign Dan Reynolds and Dr. Hillary Norton, Rheumatologist, both manage a medical condition called AS, short for AXIAL SPONDYLOARTHRITIS. AxSpA is an inflammatory arthritis of the spine that is made up of two underdiagnosed conditions: non-radiographic axial spondyloarthritis (nr-axSpA)