[Mania associated with quetiapine treatment]

Presently, the use of atypical antipsychotics is getting increasingly widespread. There are several mania/hypomania cases that have been associated with atypical antipsychotic treatment that also display antimanic, antidepressive and anxiolytic effects in addition to their antipsychotic effects. In this study, a case of schizophrenia in which manic symptoms developed after increasing the dosage of quetiapine to 300 mg/day, and subsequently disappeared after cessation of treatment is presented. Although the blockage of 5HT2 receptors and the disinhibition of frontal dopamine secretion seemed to be the reasons for the development of the mania/hypomania related to atypical antipsychotics, the mechanism is not clear. During the use of atypical antipsychotics, clinicians should be cautious to patients' mood fluctuations.