title: [The clinical characteristics and cognitive function of Parkinson's disease patients associated with pain].
abstract: OBJECTIVE
  To explore the type and etiology of chronic pain in patients with Parkinson's disease (PD), and to assess the association between pain and cognitive function.
  
  
  METHODS
  A total of 116 PD patients were enrolled in the study and assessed with the following rating scales: Unified Parkinson's Disease Rating Scale (UPDRS), Hoehn-Yahr Scale (H-Y), Hamilton Depression Rating Scale for Depression(HRSD), Visual Analogue Scale (VAS) and Montreal Cognitive Assessment (MoCA).
  
  
  RESULTS
  Compared with PD patients without pain, PD patients with pain had higher scores of UPDRS, H-Y and HRSD rating scales. Depression (scores of HRSD) was the only factor associated with pain showed by the Logistic regression model (P = 0.007). PD patients with pain had lower scores of delayed recall (P = 0.020). PD patients with pain happened before their motor symptoms had a lower score of delayed recall (P = 0.015).
  
  
  CONCLUSIONS
  Musculoskeletal pain is the most common type in PD patients with pain. Depression is probably an independent risk factor for pain in PD patients. Delayed recall is the dominant impaired cognitive function.
authors.affiliation: Department of Neurology, Soochow University Second Affiliated Hospital, Suzhou 215004, China.
authors.forename: Xiaoyi
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Neurology, Soochow University Second Affiliated Hospital, Suzhou 215004, China.
authors.forename: Chengjie
authors.initials: C
authors.lastname: Mao
authors.affiliation: Department of Neurology, Soochow University Second Affiliated Hospital, Suzhou 215004, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Neurology, Soochow University Second Affiliated Hospital, Suzhou 215004, China.
authors.forename: Weidong
authors.initials: W
authors.lastname: Hu
authors.affiliation: Department of Neurology, Soochow University Second Affiliated Hospital, Suzhou 215004, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Neurology, Soochow University Second Affiliated Hospital, Suzhou 215004, China. Email: liucf20@hotmail.com.
authors.forename: Chunfeng
authors.initials: C
authors.lastname: Liu
mesh_terms: D000368:Aged; D003071:Cognition; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000150:complications / Q000523:psychology*; D010300:Parkinson Disease / Q000150:complications / Q000523:psychology*; D011569:Psychiatric Status Rating Scales