Abstract
Autism Spectrum Disorder (ASD), Attention Deficit-Hyperactivity Disorder (ADHD), and psychotic traits, although highly comorbid, have rarely been studied in children. Existing research indicates that impulsivity, comprehension difficulties, and inflexibility are overlapping symptoms within the ASD and ADHD populations. Adult research shows high comorbidity estimates between ASD and psychosis. Here we describe the neuropsychological profile of a 14-year-old boy with diagnoses of ASD and ADHD with psychotic features. We highlight the value of comprehensive and flexible neuropsychological assessment while integrating detailed testing, behavioral observations, and collateral report. Medical history of this child included late-term and breech birth with his first Apgar score at expected level and his second score falling below expected level. Delayed acquisition of developmental milestones, learning difficulties, speech difficulties, anxiety, and hyperactivity, were reported. Auditory hallucinations triggered by stress were observed during evaluation. Comprehensive neuropsychological evaluation requires nonstandard exploration of cognitive domains and time-limited testing sessions to acquire robust estimates of functioning. Overall cognitive abilities were in the borderline range with highly variable academic performances (extremely low to average). All performances were grossly below age level and were significantly impacted by auditory hallucinations but were consistent with the diagnoses of ASD and ADHD. This case of a boy with ASD, ADHD, and auditory hallucinations demonstrates the diagnostic overlap among these conditions and the necessity for flexible neuropsychological testing, detailed behavioral observations and caregiver report in the assessment of overlapping clinical features. Multiple sources of data are required to identify patterns in symptomatology to inform differential diagnosis and comorbidities.
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More From: Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists
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