%A Dr. Oliver Grimm %A Dr. Barbara Alm %T A case of ciprofloxacin-induced acute polymorphic psychosis with a distinct deficit of the executive functions %X We present the case of a 45-year-old female patient who developed an acute polymorphic psychosis after treatment with the antibiotic ciprofloxacin. The patient showed a distinct neuropsychological deficit of the executive function. Comparing the psychopharmacological features of ketamine and ciprofloxacine we hypothesize that ciprofloxacine leads to psychosis similar to a ketamine induced psychosis. Our case report is unique not only because fluorquinolone induced psychosis has a very low incidence, but although because we were the first in obtaining a detailed neuropsychological testing. %D 2005 %K ciprofloxacine induced psychosis, acute psychosis, neuropsychology ciprofloxacine %L cogprints4187