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Autistic disorder and schizophrenia: diagnostic overlaps
1University of Guelph and Clarke Institute of Psychiatry, Ontario, Canada.
Journal of Autism and Developmental Disorders
|July 7, 2001
Summary
This study examined symptom overlap between autism and schizophrenia in males. Findings suggest a potential comorbidity, particularly in individuals diagnosed with autism, despite supporting differentiation between the two conditions.
Area of Science:
- Psychiatry
- Developmental Neuroscience
- Clinical Psychology
Background:
- Autism and schizophrenia share some overlapping symptoms, leading to diagnostic challenges.
- Previous research has explored the relationship between these two neurodevelopmental disorders.
Purpose of the Study:
- To investigate the symptom overlap between autism and schizophrenia in a male cohort.
- To explore the potential comorbidity of autism and schizophrenia.
Main Methods:
- Data collected from 14 males with autism and 14 with schizophrenia.
- Utilized Structured Clinical Interview (SCID), Schedule for Positive Symptoms (SAPS), Schedule for Negative Symptoms (SANS), Childhood Autism Rating Scale (CARS), and DSM-III-R.
- Assessed symptom overlap and diagnostic criteria for both disorders.
Main Results:
- 7 individuals with autism met criteria for schizophrenia (disorganized type), exhibiting negative symptoms.
- 5 individuals with autism showed positive symptoms (SAPS), and 6 showed negative symptoms (SANS).
- No significant difference in nonverbal intelligence was observed between groups.
Conclusions:
- Findings support the differentiation between autism and schizophrenia.
- Results are consistent with a potential comorbidity, especially in individuals diagnosed with autism.
- Further research is warranted to understand the complex relationship and shared features.
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