How are self-administered patient questionnaires on fibromyalgia scored?

Updated: Apr 23, 2020
  • Author: Chad S Boomershine, MD, PhD, CPI, CPT; Chief Editor: Herbert S Diamond, MD  more...
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Scores from the second and third sections are summed to yield a 0-12 SS scale score analogous to the SS scale score in the physician-assessed diagnostic criteria. Scores from the WPI and SS scale sections are summed to yield a 0-31 index termed the polysymptomatic distress scale (PSD). Patients with a PSD scale score of 13 or more are diagnosed with fibromyalgia if the symptoms have been present at a similar level for at least 3 months and the patient does not have another disorder that would otherwise explain the symptoms.

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