Hebephrenic Schizophrenia is defined by the ICD-10 Classification of Mental and Behavioural Disorders, World Health Organization, Geneva, 1992, thus:
A form of schizophrenia in which affective changes are prominent, delusions and hallucinations fleeting and fragmentary, behaviour irresponsible and unpredictable, and mannerisms common. The mood is shallow and inappropirate and often accompanied by giggling or self-satisfied, self-absorbed smiling, or by a lofty manner, grimaces, mannerisms, pranks, hypochondriacal complaints, and reiterated phrases. Thought is disorganized and speech rambling and incoherent. There is a tendency to remain solitary, and behaviour seems empty of purpose and feeling.
Posted by Wrinkled Weasel on Thursday, May 14, 2009