[Schizophrenia: one or two psychoses? Positive and negative symptoms]

In this paper are presented conceptions of the twofold idea of schizophrenia as disease of two types dependent on positive or negative symptoms. Actual examination of fundamental research about the fluctuating of brain turnover of neurotransmitters confirm Crow's theory of selected two types of schizophrenic patients. In conclusion the results suggest that, depending on the course of schizophrenia, individual and multiplex forms of treatment including pharmacotherapy, psychotherapy and psychosocial effects are required.