title: Frequent use of tobacco and alcohol in Chinese psoriasis patients.
abstract: BACKGROUND
  This study aimed to explore smoking and drinking as risk factors in psoriasis.
  
  
  METHODS
  Data collected from 789 psoriasis patients and 789 healthy controls were analyzed to determine whether there was an association between smoking/drinking and psoriasis.
  
  
  RESULTS
  The proportion of male psoriasis patients using tobacco and alcohol was much higher than that of the control group (P < 10(-6)), whereas no statistical differences were found between female smokers and the control group. In general, heavy smokers were more likely to have severe psoriasis.
  
  
  CONCLUSIONS
  Tobacco use in patients is correlated with psoriasis.
authors.affiliation: Institute of Dermatology, Anhui Medical University, Hefei, China. ayzxj@mail.hf.ah.cn
authors.forename: Xuejun
authors.initials: X
authors.lastname: Zhang
authors.forename: Hongyan
authors.initials: H
authors.lastname: Wang
authors.forename: Hsu
authors.initials: H
authors.lastname: Te-Shao
authors.forename: Sen
authors.initials: S
authors.lastname: Yang
authors.forename: Fuxi
authors.initials: F
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000428:Alcohol Drinking / Q000009:adverse effects*; D016022:Case-Control Studies; D002648:Child; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011565:Psoriasis / Q000209:etiology*; D012720:Severity of Illness Index; D012907:Smoking / Q000009:adverse effects*