title: [Internet addiction as a co-morbid disorder among patients of german addiction rehabilitation facilities: an exploratory investigation of clinical prevalence].
abstract: OBJECTIVE
  Excessive internet use is being discussed as a non-substance-related addiction disorder. Estimations of its prevalence show that 1% of the German general population is affected by internet addiction. However, it is still unclear, whether internet addiction as a co-morbid disorder is also common among patients of the general health care system, especially in patients being treated in inpatient addiction rehabilitation centers. It seems plausible that these patients have a heightened proneness to co-morbid internet addiction.
  
  
  METHODS
  In order to address this issue, a government-funded cooperation project was conducted. Within six months every new patient admitted to one of 15 rehabilitation facilities was screened for internet addiction.
  
  
  RESULTS
  4.2% of the patients fulfilled criteria for internet addiction. Male patients of younger age with main diagnosis of cannabis dependence or pathological gambling were found to be at higher risk.
  
  
  CONCLUSIONS
  Internet addiction is more common among patients of the rehabilitation system than in the general population. Especially young, male patients in treatment for cannabis dependence or pathological gambling are at risk for co-morbid internet addiction. It is recommended that regular screening for internet addiction should be implemented in facilities with patients at risk in order to offer indicative treatment.
authors.affiliation: Ambulanz für Spielsucht, Klinik und Poliklinik für Psychosomatische Medizin und Psychotherapie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz. muellka@uni-mainz.de
authors.forename: Kai W
authors.initials: KW
authors.lastname: Müller
authors.forename: Andreas
authors.initials: A
authors.lastname: Koch
authors.forename: Manfred E
authors.initials: ME
authors.lastname: Beutel
authors.forename: Ulrike
authors.initials: U
authors.lastname: Dickenhorst
authors.forename: Jens
authors.initials: J
authors.lastname: Medenwaldt
authors.forename: Klaus
authors.initials: K
authors.lastname: Wölfling
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000437:Alcoholism / Q000453:epidemiology* / Q000534:rehabilitation*; D016739:Behavior, Addictive / Q000453:epidemiology* / Q000534:rehabilitation*; D015897:Comorbidity; D003430:Cross-Sectional Studies; D005260:Female; D005715:Gambling / Q000453:epidemiology / Q000534:rehabilitation; D005858:Germany; D006801:Humans; D013287:Illicit Drugs; D020407:Internet; D008297:Male; D002189:Marijuana Abuse / Q000453:epidemiology / Q000534:rehabilitation; D008403:Mass Screening; D008875:Middle Aged; D012047:Rehabilitation Centers / Q000706:statistics & numerical data*; D012737:Sex Factors; D019966:Substance-Related Disorders / Q000453:epidemiology* / Q000534:rehabilitation*; D014600:Utilization Review / Q000706:statistics & numerical data; D055815:Young Adult
chemical_list: D013287:Illicit Drugs