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DSM-IV-TR Diagnostic Criteria for 297.3 Shared Psychotic Disorder:
- A delusion develops in an individual in the context of a close relationship with another person or persons, who have an already established delusion.
- The delusion is similar in content to that of the person who already has an established delusion.
- The disturbance is not better accounted for by another psychotic disorder (eg, schizophrenia) or a mood disorder with psychotic features and is not due to the direct physiological effects of a substance (eg, drug abuse, medication) or a general medical condition.
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