Fibromyalgia is nowadays an object of controversy. It is the most significant painful and chronic pathology, with a prevalence of 2 to 4% in the general population and a ratio of 3.5% of women for 0.5% of men. Since 1990, fibromyalgia has been defined according to the criteria of the American College of Rheumatology (ACR). The use of these criteria in practice has proved to be controversial and a wide range of studies has shown that an important percentage of patients with fibromyalgia are diagnosed without the criteria of the ACR. This article describes an alternative method for the diagnosis of fibromyalgia.