Fibromyalgia is an idiopathic chronic condition that causes widespread musculoskeletal pain, hyperalgesia and allodynia. This review aims to approach the general epidemiology of fibromyalgia according to the most recent published studies, identifying the general worldwide prevalence of the disease, its basic epidemiological profiles and its economic costs, with specific interest in the Spanish and Comunidad Valenciana cases. Fibromyalgia affects, on average, 2.
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