1. A form of schizophrenia characterized by severe disintegration of personality including erratic speech and childish mannerisms and bizarre behaviour; usually becomes evident during puberty; the most common diagnostic category in mental institutions
   "The teenager's disorganised schizophrenia made it difficult for him to function in school";
   - hebephrenia, hebephrenic schizophrenia, disorganized schizophrenia, disorganized type schizophrenia, disorganised type schizophrenia [Brit]

Type of: dementia praecox [archaic], schizophrenia, schizophrenic disorder, schizophrenic psychosis