A diagnosis of rheumatoid arthritis, endometriosis or IBD is associated with later onset of fibromyalgia and chronic widespread pain
BACKGROUND: Widespread pain is a common comorbidity in several chronic diseases and is suspected to be caused by the underlying disease that has provoked a state of central sensitization. However, this argument is currently limited by evidence that has not sufficiently captured the temporal nature of the relationship between diagnosis of the underlying disease and onset of widespread pain. The aim