Disorganize schizophrenia is a subtype of schizophrenia as defined in the Diagnostic and Statistical Manual of Mental Disorders. This type is characterized by prominent disorganized behavior and speech (see formal thought disorder) including word salad, and flat or inappropriate emotion and affect. The criteria for the catatonic subtype of schizophrenia must not have been met as well. This type of schizophrenia is also known as hebephrenia, and is named after the Greek goddess of youth, Hebe, in reference to the typical age of onset in puberty.