[Note: The full text of this educational article is available free online at www.ccjm.org/content/76/6/345.long]
The Symptom Intensity Scale score can be used to identify and quantify fibromyalgia syndrome from information supplied by a simple questionnaire.
In this paper, the author describes how this test was developed and argues in favor of its use in clinical practice in diagnosing fibromyalgia syndrome.
Source: Cleveland Clinic Journal of Medicine, June 2009;76(6) pp 345-352. PMID: 19487555, by Wilke WS, Department of Rheumatic and Immunologic Disease, Cleveland Clinic, Cleveland, Ohio. [E-mail: firstname.lastname@example.org]