World Journal of Psychiatry
W J P
Retrospective Study
ORIGINAL ARTICLEorted significantly higher mean TSC scores: ADHD 3.0; LNCG 1.7; P < 0.001. ADHD status was associated with higher mean NSM: ADHD 2.0 vs LNCG 1.1; P < 0.0001. Also, ADHD subjects had higher PM symptoms than LNCG, with PM means over all time points of 1.3 ADHD; 0.9 LNCG; P = 0.0001. Examining both NSM and PM, ADHD status associated with greater NSM than PM. However, Over 14 years, the NSM symptoms declined and changed to PM over time (df 3, 2523; F = 20.1; P < 0.0001). Finally, Irritability (BD DSM criterion-A2) rates were significantly higher in ADHD than LNCG (χ 2 = 122.2, P < 0.0001), but irritability was associated more strongly with NSM than PM (df 3, 2538; F = 43.2; P < 0.0001).
CONCLUSION:Individuals with ADHD do not appear to be at significantly greater risk for developing BD, but do show higher rates of BD symptoms, especially NSM. The greater linkage of irritability to NSM than to PM suggests caution when making BD diagnoses based on irritability alone as one of 2 (A-level) symptoms for BD diagnosis, particularly in view of its frequent presentation with other psychopathologies.Key words: Multimodal treatment study of attention deficit hyperactivity disorder; Irritability; Attention deficit hyperactivity disorder; Diagnostic interview schedule for children; Bipolar disorder Core tip: Despite its formal DSM delineation, alternative pediatric bipolar disorder (BD) definitions have been debated for decades. Some research suggests that attention deficit hyperactivity disorder (ADHD) poses a risk for BD and that pediatric BD presents differently as non-episodic, greater chronicity, and more frequent irritability. In our study, we found the ADHD status is not a risk factor for developing BD over 14 years of followups. When we controlled for overlapping ADHD/BD, nonspecific symptoms showed decreasing rates of BD in ADHD-diagnosed children. Clinicians are encouraged to pay greater attention to specific symptoms of mania in order to establish an accurate BD diagnosis. Furthermore, irritability (DSM criteria A2), was a nonspecific symptom of mania and linked to common psychopathologies in the early development of these children.