22. Which of the following is the unacceptable statement about Fibromyalgia syndrome (FMS)? (A) Epidemiology studies indicate that FMS is present in at least 2% of the general population. (B) FMS tender points have the same refer pain to a zone of reference as the myofascial pain syndrome trigger points in general. (C) The criteria of American College of Rheumatology (Wolfe et al 1990) for FMS required the component: a history of widespread pain for at least 3 months. (D) The criteria of American College of Rheumatlogy (Wolfe et al 1990) for FMS required the component: pain sensitivity to 4 kg of digital pressure at 11 or more of 18 anatomically defined tender points (E) A reasonably accurate clinical estimate of the correct amount of pressure can be obtained by pressing the examining thumb against a surface until the blood flow to the mid-portion of the thumb nail blanches.