Fibromyalgia symptoms can mask the presence of chronic inflammatory disease affecting the joints of the pelvis and spine, according to new research. The study, titled “Prevalence of Axial Spondyloarthritis Among Patients With Fibromyalgia: A Magnetic Resonance Imaging Study With Application of the Assessment of SpondyloArthritis International Society Classification Criteria,” was published in the journal Arthritis Care & Research. It highlights the importance of vigilant management of fibromyalgia symptoms by doctors and patients, taking into account the possible underlying presence of inflammatory disorders. Unlike other rheumatologic diseases, fibromyalgia is non-inflammatory in nature, and recent reports suggest that it is caused by uncontrolled hyper-activation of the pain-associated nervous response. Fibromyalgia patients can present a broad spectrum of symptoms, including chronic nocturnal back pain, morning stiffness, and disturbed sleep. However, these are also symptoms of an inflammatory condition called axial spondyloarthritis (SpA).