title: Risk factors for chronic pain after inguinal hernia repair.
abstract: BACKGROUND
  Chronic postoperative pain after inguinal hernia repair has an incidence of 0.7-36.7%. This study aimed to look for any relationship between patients presenting with severe pain at initial presentation or a past history of chronic pain conditions and the development of severe chronic pain following inguinal hernia repair.
  
  
  METHODS
  This was a retrospective study in which 24 patients referred to a chronic pain clinic following inguinal hernia repair were compared with 24 age- and sex-matched controls. Hospital notes were reviewed for the severity of presenting pain and a past history of chronic pain.
  
  
  RESULTS
  Average age was 55.4 years. In the chronic postoperative pain group, 14 (58%) presented with severe pain versus 3 (13%) in the pain-free group. Twelve (50%) of the chronic postoperative pain group had a past history of chronic pain conditions versus none of the pain-free group. Both of these factors showed a significant (P < 0.005) association with severe chronic pain postoperatively.
  
  
  CONCLUSIONS
  Patients with severe pain at presentation or with a past history of chronic pain conditions are at increased risk of severe chronic pain after inguinal hernia repair. A prospective study is needed to quantify any increased risk, although this would need to be of significant size.
authors: Department Upper GI Surgery, West Suffolk Hospital, Bury St Edmunds, Suffolk, UK.
authors: R
authors: R
authors: Dennis
authors: D
authors: D
authors: O'Riordan
mesh_terms: D016022:Case-Control Studies; D002908:Chronic Disease; D005260:Female; D006552:Hernia, Inguinal / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010149:Postoperative Pain / Q000209:etiology*; D012189:Retrospective Studies; D012307:Risk Factors