The Prevalence of Fibromyalgia in the General Population: A Comparison of the American College of Rheumatology 1990, 2010, and Modified 2010 Classification Criteria

Abstract

Objective. The American College of Rheumatology (ACR) 1990 fibromyalgia classification criteria are based on the presence of widespread pain and tenderness. In 2010, new criteria were proposed that focused more on multiple symptoms, and these criteria were later modified to require only self report of symptoms. The current study aimed to determine the population prevalence of fibromyalgia and to compare differences in prevalence using the alternative criteria. Fibromyalgia is one of the most common reasons for referring a patient to a rheumatologist (1), and while there are a number of estimates of the occurrence of fibromyalgia in rheumatology clinic populations, there are few studies of its prevalence in the general population. Data from a national health interview survey in Denmark estimated the prevalence to be Ͻ1% (2). Other investigators have reported a prevalence of 2.4% in Spain (3); and in North America, estimates vary from 2.0% to 3.3% (4,5). Fibromyalgia prevalence increases with age, reaching a peak around the seventh decade of life, and at every age it is more common in women than in men (4).

A Blinded, Randomized, Placebo-Controlled Study to Investigate the Efficacy and Safety of Ferric Carboxymaltose in Iron-Deficient Patients with Fibromyalgia

“…The prevalence of fibromyalgia in the United States is estimated to range from 2 to 8%, depending on which diagnostic criteria are applied [2]. Although fibromyalgia affects both sexes, it is more prevalent among women [3,4]. Key diagnostic criteria include widespread pain index and symptom severity scores within specific boundaries, presence of unremitting symptoms for C 3 months, and absence of another diagnosis that would otherwise account for the pain [5].…”

Diagnosing fibromyalgia in rheumatoid arthritis: The importance of assessing disease activity

“…There are evidences that presence of FMS in RA patients reduce the QoL, increases functional impairment and HAQ scores. [21,[27][28][29][30][31][32] In our study, HAQ scores were higher in patients with RA and FMS together. Quality of life was compared between the four groups.…”

The (putative) pathological impact of fibromyalgia on the orofacial system

“…De gerapporteerde prevalentie in de algemene bevolking varieert van 2 tot 8%, met een vrouw-manratio van ongeveer 2:1. De prevalentie verschilt niet per land, cultuur of etnische groep (Jones et al, 2015). Dit artikel geeft informatie over de pathofysiologie, de diagnostiek en de behandeling van fi bromyalgie en over de relatie tussen fi bromyalgie en het orofaciale systeem.…”