biological definition of schizophrenia
Schizophrenia is a mental disorder often characterized by abnormal social behavior and failure to recognize what is real.ositive symptoms are those that most individuals do not normally experience but are present in people with schizophrenia. They can include delusions, disordered thoughts and speech, and tactile, auditory, visual, olfactory and gustatory hallucinations, typically regarded as manifestations of psychosis.