The term paranoid schizophrenia is no longer used in the United States since the 2013 change in the DSM-V that classifies the range of symptoms of former sub-types all under "schizophrenia".]Schizophrenia is defined as "a chronic mental disorder in which a person is withdrawn from reality". Prior to 2013 schizophrenia had been divided into subtypes based on the "predominant symptomatology at the time of evaluation". The subtypes were classified as: paranoid, disorganized, catatonic, undifferentiated, and residual type. However, they are not completely separate diagnoses, and cannot predict the progression of the mental illness.