TY - JOUR T1 - Serum serotonin levels are not useful in diagnosing fibromyalgia JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis SP - 1267 LP - 1268 DO - 10.1136/ard.2006.058842 VL - 66 IS - 9 AU - Gabriel Jaschko AU - Urs Hepp AU - Magdalena Berkhoff AU - Margrit Schmet AU - Beat A Michel AU - Steffen Gay AU - Haiko Sprott Y1 - 2007/09/01 UR - http://ard.bmj.com/content/66/9/1267.abstract N2 - Altered concentrations of circulating serotonin have been implicated in several pathological conditions such as fibromyalgia,1–4 rheumatoid arthritis2,4,5 and major depression.6 In fibromyalgia in particular, several investigators have reported low serum serotonin levels as compared to the general population.1,3 We analysed sera from 20 patients with fibromyalgia, and compared the data with that obtained on analysis of sera from age- and gender-matched controls, including 20 patients with of rheumatoid arthritis, 20 with osteoarthritis, 20 with major depression, and 20 healthy individuals. The patients with fibromyalgia had a mean number of tender points of 16.3 and a mean duration of the disease of 9.65 years. Thirteen patients … ER -