title: Evaluation of pain sensitivity by tender point counts and myalgic score in patients with and without obstructive sleep apnea syndrome.
abstract: OBJECTIVE
  The purpose of this study was to assess the difference between patients with and without obstructive sleep apnea syndrome (OSAS) with respect to pain sensitivity.
  
  
  METHODS
  The study was conducted on 31 womens diagnosed with OSAS and 31 healthy women. All patients underwent polysomnographic testing. A pressure algometer (dolorimeter) was used to measure the pressure pain threshold. Fibromyalgia was diagnosed based on the 1990 American College of Rheumatology diagnosis criteria.
  
  
  RESULTS
  The myalgic score was 73.95 ± 18.09 in patients with OSAS, while this value was 84.18 ± 24.31 in the control group. The difference between the groups was statistically significant (P = 0.041).The number of tender points was 8.19 ± 3.35 in the patient group with OSAS, while this number was 6.35 ± 2.23 in the control group. The difference between the two groups was statistically significant (P = 0.014). No statistically significant differences were found between age, body mass index, Beck depression scores, control point score and the presence of fibromyalgia, between the two groups (P > 0.05). A statistically significant positive correlation was found between the myalgic scores and mean saturation O2(%) values of the patients (r = 0.357; P = 0.049).
  
  
  CONCLUSIONS
  The differences noted between OSAS patients and the control group with respect to myalgic score and the number of tender points suggest that there might be a relation between OSAS and pain sensitivity. There might be an association between low oxygen saturation and total myalgic score.
authors.affiliation: Department of Physical Medicine and Rehabilitation, Derince Training and Research Hospital, Kocaeli, Turkey.
authors.forename: Rabia
authors.initials: R
authors.lastname: Terzi
authors.affiliation: Department of Neurology, Derince Training and Research Hospital, Kocaeli, Turkey.
authors.forename: Zahide
authors.initials: Z
authors.lastname: Yılmaz
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D005260:Female; D005356:Fibromyalgia / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D010147:Pain Measurement; D017288:Pain Threshold; D017286:Polysomnography; D012720:Severity of Illness Index; D020181:Sleep Apnea, Obstructive / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D055815:Young Adult
keywords: fibromyalgia; obstructive sleep apnea; pain; pressure pain threshold; women