title: Cystitis due to the use of ketamine as a recreational drug: a case report.
abstract: BACKGROUND
  Ketamine is a derivative of phencyclidine and is a dissociative anaesthetic. Its use as a recreational drug is on the increase among young adults attending clubs and parties.
  
  
  METHODS
  We describe the case of a 20-year-old man who presented with a 7-month history of urinary frequency, nocturia, urgency, suprapubic discomfort during micturition and episodes of severe haematuria shortly after commencing weekly recreational ketamine use. Complementary examinations were negative except for a thickened bladder wall on ultrasound examination and mild inflammatory changes on cystoscopy. So far only nine cases of ketamine-associated ulcerative cystitis have been described.
  
  
  CONCLUSIONS
  We expect that in the future an increasing number of cases of cystitis caused by ketamine use will be seen in young adults.
authors.affiliation: University of Antwerp, Universiteitsplein, Antwerp, Belgium. brittcolebunders@hotmail.com
authors.forename: Britt
authors.initials: B
authors.lastname: Colebunders
authors.forename: Peter
authors.initials: P
authors.lastname: Van Erps