RT Journal A1 Baschetti R T1 FIbromyalgia, chronic fatigue syndrome, and addison disease JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1999 FD November 8 VO 159 IS 20 SP 2481 OP 2481 DO UL http://dx.doi.org/ AB In his review article about fibromyalgia syndrome (FM), Goldenberg1 highlights the similarity between FM and chronic fatigue syndrome (CFS) and goes as far as stating that "these syndromes overlap so extensively that it may be concluded that each represents different presentations of the same general condition." This is unlikely to be the case because, as Crofford et al2 pointed out, "comparison of hypothalamic-pituitary-adrenal axis function in FM with patients with CFS reveals differences despite the significant clinical overlap between these patients." Other recently observed differences, according to Evengard et al,3 "further support that FM and CFS are different disorders in spite of overlapping symptomatology."