Disorganized schizophrenia
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2008-05-25T11:08:05Z
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{{Refimprove|date=December 2007}}
{{DiseaseDisorder infobox |
Name = {{PAGENAME}} |
ICD10 = {{ICD10|F|20|1|f|20}} |
ICD9 = {{ICD9|295.1}} |
}}
'''Disorganized 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 (mythology)|Hebe]], in reference to the typical age of onset in puberty.{{Fact|date=December 2007}}
Unlike the paranoid subtype of schizophrenia, [[delusion]]s and [[hallucination]]s are not the most prominent feature<ref>[http://schizophrenia.about.com/od/whatisschizophrenia/f/schiz_diagnosis.htm How Schizophrenia is diagnosed]</ref><ref>[http://counsellingresource.com/distress/schizophrenia/icd/hebephrenic.html Hebephrenic Schizophrenia Diagnostic Criteria]</ref>, although fragmentary delusions and hallucinations may be present.
The emotional responses of people diagnosed with this subtype can often seem strange or inappropriate to the situation. Inappropriate facial responses may be common and behavior is sometimes described as 'silly', such as inappropriate laughter. Complete lack of expressed emotion is sometimes seen, as is an apparent indifference, [[anhedonia]] (the lack of [[pleasure]]), and [[avolition]] (a lack of motivation). Some of these features are also present in other types of schizophrenia, but they are most prominent in Disorganized Schizophrenia.
This form of schizophrenia is typically associated with early onset (often between the ages of 15 and 25 years) and is thought to have a poor [[prognosis]] because of the rapid development of 'negative' symptoms and decline in social functioning.<ref>[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=8451614 McGlashan TH, Fenton WS (1993)] Subtype progression and pathophysiologic deterioration in early schizophrenia. ''Schizophrenia Bulletin'', 19 (1), 71-84.</ref>
Disorganized schizophrenia is thought to be an extreme expression of the '[[disorganization syndrome]]' that has been hypothesised to be one aspect of a three-factor model of symptoms in schizophrenia<ref>[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=3690102 Liddle PF. (1987)] The symptoms of chronic schizophrenia. A re-examination of the positive-negative dichotomy. ''[[British Journal of Psychiatry]]'', 151, 145-51.</ref> The other factors being '[[reality distortion]]' (involving delusions and hallucinations) and '[[psychomotor poverty]]' (poverty of speech, lack of spontaneous movement and various aspects of blunting of emotion).
==References==
{{reflist}}
{{Mental and behavioural disorders}}
[[Category:Schizophrenia]]
[[Category:Disability]]
[[bs:Hebefrena shizofrenija]]
[[de:Hebephrene Schizophrenie]]
[[nl:Gedesorganiseerde schizofrenie]]
[[uz:Gebefreniyali qoʻzgʻolish]]
[[pl:Schizofrenia zdezorganizowana]]
[[ru:Гебефренический синдром]]
[[fi:Hebefreeninen skitsofrenia]]
[[uk:Гебефренія]]