People who have schizophrenia experience a split in their psyche and lose their ability to differentiate between what is real and what is not. There are four types of schizophrenia and therapy for each changes according to their subtypes. Based on the latest research, evidence suggests that schizophrenia is caused by a certain neurological deficit. There are treatments and medication present now which help disable genes of the brain from producing unnecessary proteins which are thought to inhibit the symptoms of schizophrenia.