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We report the case of a 35 year old women who developed a complex paranoid delusion during the course of clomiphene treatment für ovulation. The psychopathology was remarkable, because after a short hypomanic period the patient was without severe cognitive disturbance but struggled with a complex monothematic delusion. The delusion vanished in the course of a combination treatment with olanzapine a cognitive behavioral therapy. We could not entirely rule out the possibility of an endogenous psychiatric disease but nevertheless we encountered an unusual monothematic delusion which showed a strong temporal correlation with the intake of clomiphene. We provide some speculation about underlying neurobiological mechanisms on the basis of the dopamine theory of delusion.

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.