title: Self-Reported Migraine and Chronic Fatigue Syndrome Are More Prevalent in People with Myofascial vs Nonmyofascial Temporomandibular Disorders.
abstract: OBJECTIVE
  To compare the number of comorbidities and the prevalence of five specific comorbidities in people who have temporomandibular disorders (TMD) with or without myofascial pain.
  
  
  METHODS
  This cross-sectional study included 180 patients seeking TMD treatment in Boston and Montreal hospitals. A self-administered questionnaire was used to collect information on sociodemographic and behavioral factors, as well as the presence of the following five comorbidities: migraine, chronic fatigue syndrome, irritable bowel syndrome, interstitial cystitis, and restless leg syndrome. TMD was diagnosed using the Research Diagnostic Criteria for TMD. Chi-square and Student t tests were used for categorical and continuous variables, respectively, to test for differences between myofascial (n = 121) and nonmyofascial (n = 59) TMD groups. Multiple logistic regression analysis was used to compare the type and number of self-reported comorbidities in both groups, controlling for confounding variables.
  
  
  RESULTS
  The following were found to be significantly higher in the myofascial TMD group than in the nonmyofascial TMD group: self-reported migraine (55% vs 28%, P = .001), chronic fatigue syndrome (19% vs 5%, P = .01), and the mean total number of comorbidities (1.30 vs 0.83, P = .01).
  
  
  CONCLUSIONS
  Individuals with myofascial TMD had a higher prevalence of self-reported migraine and chronic fatigue syndrome than those with nonmyofascial TMD.
authors.forename: Haissam
authors.initials: H
authors.lastname: Dahan
authors.forename: Yoram
authors.initials: Y
authors.lastname: Shir
authors.forename: Belinda
authors.initials: B
authors.lastname: Nicolau
authors.forename: David
authors.initials: D
authors.lastname: Keith
authors.forename: Paul
authors.initials: P
authors.lastname: Allison
mesh_terms: D000328:Adult; D001007:Anxiety / Q000453:epidemiology; D001900:Boston / Q000453:epidemiology; D015897:Comorbidity; D003430:Cross-Sectional Studies; D018856:Cystitis, Interstitial / Q000453:epidemiology; D003863:Depression / Q000453:epidemiology; D004651:Employment / Q000706:statistics & numerical data; D015673:Fatigue Syndrome, Chronic / Q000453:epidemiology*; D005260:Female; D006801:Humans; D043183:Irritable Bowel Syndrome / Q000453:epidemiology; D008297:Male; D017533:Marital Status / Q000706:statistics & numerical data; D008881:Migraine Disorders / Q000453:epidemiology*; D015995:Prevalence; D011792:Quebec / Q000453:epidemiology; D012148:Restless Legs Syndrome / Q000453:epidemiology; D057566:Self Report; D013705:Temporomandibular Joint Disorders / Q000453:epidemiology*; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000453:epidemiology*