Differentiating between comorbidity and symptom overlap in ADHD and early onset bipolar disorder.
Reported rates of comorbidity between early onset bipolar disorder (BD) and attention deficit hyperactivity disorder (ADHD) have a wide range, perhaps due to developmental issues and differences in interpretation of overlapping symptoms. We compared questionnaire-based and neuropsychological measures of inattention and impulsivity/hyperactivity, in children/adolescents with ADHD combined subtype (ADHD-C; n26), concurrent ADHD-C and BD (n15), BD (n25) with Controls (n69). Sub-analyses were performed on BD with and without inattention symptoms. The two ADHD-C groups displayed neuropsychological impairments that were not found in the BD group in spite of subjective and questionnaire-rated inattention. The findings caution against over-diagnosis of ADHD in BD.
a Department of Mental Health , Sörlandet Hospital , Arendal , Norway.
Anne H
AH
Udal
Jens
J
Egeland
Bjørg
B
Oygarden
Ulrik F
UF
Malt
Hans
H
Lövdahl
Are H
AH
Pripp
Berit
B
Groholt
D000293:Adolescent; D017668:Age of Onset; D001288:Attention; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis* / Q000453:epidemiology* / Q000503:physiopathology / Q000523:psychology; D001714:Bipolar Disorder / Q000175:diagnosis* / Q000453:epidemiology* / Q000503:physiopathology / Q000523:psychology; D002648:Child; D015897:Comorbidity; D005260:Female; D006801:Humans; D006948:Hyperkinesis; D007175:Impulsive Behavior / Q000523:psychology; D008297:Male; D009483:Neuropsychological Tests; D011795:Surveys and Questionnaires