Formal Thought Disorder in Pediatric Complex Partial Seizure Disorder

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Abstract
We compared the formal thought disorder ratings of 27 children with complex partial seizure disorder, 31 schizophrenic children and 58 normal children. The epileptic children with fullscale IQ scores below 100 had significantly more formal thought disorder than normal children with a similar IQ. The severity of their formal thought disorder was related to the age of seizure onset, seizure control and a diagnosis of schizophrenia spectrum disorder. The schizophrenic children had thought disorder irrespective of IQ scores. The cognitive correlates of their formal thought disorder scores differed from those of the epileptic children. Possible anatomical substrates of thought disorder in childhood complex partial seizure disorder and schizophrenia are discussed.