Life events in a prepubertal and early adolescent bipolar disorder phenotype compared to attention-deficit hyperactive and normal controls.

OBJECTIVE: To examine life events in subjects with a prepubertal and early adolescent bipolar disorder phenotype (PEA-BP) compared to those in subjects with attention-deficit hyperactivity disorder (ADHD) and normal controls (NC). METHODS: To optimize generalizeability, subjects with PEA-BP (n = 93) and ADHD (n = 81) were consecutively ascertained from pediatric and psychiatric sites. Subjects in the NC group (n = 94) were obtained from a random survey. PEA-BP was defined by Diagnostic and Statistical Manual of Mental Disorders (fourth edition) mania with at least one of the cardinal symptoms of mania (i.e., elation and/or grandiosity) to avoid diagnosing mania only by criteria that overlapped with those for ADHD. All subjects received comprehensive, blind research assessments of mothers about their children and separately of children about themselves. Assessment instruments included the Washington University in St. Louis Kiddie Schedule for Affective Disorders and Schizophrenia (WASH-U-KSADS) and the Life Events Checklist. Data from the Life Events Checklist were examined by total life events and by subcategories of dependent, independent, or uncertain relationships to the child. RESULTS: Total, independent, dependent, and uncertain life events were all significantly more frequent in the PEA-BP subjects compared to both the ADHD and NC groups. CONCLUSIONS: Because there was no a priori reason to expect significantly more independent life events in the PEA-BP compared to the ADHD and NC groups, these results warrant further research into the role of life events in the onset of PEA-BP.

Two-year prospective follow-up of children with a prepubertal and early adolescent bipolar disorder phenotype.

OBJECTIVE: Longitudinal outcomes of bipolar disorder with onset in the late teenage years or in adulthood have been reported, but little is known about the natural history of childhood-onset mania. This study sought to provide rates and predictors of recovery and relapse in children with a prepubertal and early adolescent bipolar disorder phenotype. METHOD: Eighty-nine consecutively ascertained outpatient subjects (mean age=10.9 years [SD=2.7]) received comprehensive research assessments, including separate interviews of mothers about their children and of children about themselves, at baseline and at 6, 12, 18, and 24 months after baseline. The study phenotype required DSM-IV mania with elation and/or grandiosity as one criterion to distinguish the study phenotype from a diagnosis of mania based on criteria overlapping with those for attention deficit hyperactivity disorder and to ensure that subjects had at least one of the two cardinal features of mania (i.e., elation and/or grandiosity). Subjects were treated by their own community practitioners. RESULTS: The proportions of subjects who recovered from mania and who relapsed after recovery were 65.2% and 55.2%, respectively. The mean time to recovery was 36.0 weeks (SD=25.0). Relapse occurred after a mean of 28.6 weeks (SD=13.2). Living with an intact biological family significantly predicted rate of recovery, and a low level of maternal warmth significantly predicted rate of relapse. CONCLUSIONS: The relatively poor outcomes of these subjects may be related to their phenotypic resemblance to severely ill adults with bipolar disorder who have mixed mania, continuous rapid cycling, psychosis, and treatment-resistant psychopathology. A lower level of effectiveness of mood stabilizers in children cannot be ruled out. Although the significance of maternal warmth as a predictor is consistent with reports in adult mania, the significance of intact family as a predictor may be unique to childhood mania.

DSM-IV mania symptoms in a prepubertal and early adolescent bipolar disorder phenotype compared to attention-deficit hyperactive and normal controls.

OBJECTIVE: To compare the prevalence of Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV) mania symptoms in a prepubertal and early adolescent bipolar disorder phenotype (PEA-BP) to those with attention deficit hyperactivity disorder (ADHD) and normal community controls (CC). METHODS: To optimize generalizeability, subjects with PEA-BP and ADHD were consecutively ascertained from outpatient pediatric and psychiatric sites, and CC subjects were obtained from a random survey. All 268 subjects (93 with PEA-BP, 81 with ADHD, and 94 CC) received comprehensive, blind, baseline research assessments of mothers about their children and of children about themselves. PEA-BP was defined by DSM-IV mania with elation and/or grandiosity as one criterion to ensure that subjects had one of the two cardinal symptoms of mania and to avoid diagnosing mania only by criteria that overlapped with those for ADHD. RESULTS: Five symptoms (i.e., elation, grandiosity, flight of ideas/racing thoughts, decreased need for sleep, and hypersexuality) provided the best discrimination of PEA-BP subjects from ADHD and CC controls. These five symptoms are also mania-specific in DSM-IV (i.e., they do not overlap with DSM-IV symptoms for ADHD). Irritability, hyperactivity, accelerated speech, and distractibility were very frequent in both PEA-BP and ADHD groups and therefore were not useful for differential diagnosis. Concurrent elation and irritability occurred in 87.1% of subjects with PEA-BP. Data on suicidality, psychosis, mixed mania, and continuous rapid cycling were also provided. CONCLUSION: Unlike late teenage/adult onset bipolar disorder, even subjects with PEA-BP selected for DSM-IV mania with cardinal symptoms have high rates of comorbid DSM-IV ADHD. High rates of concurrent elation and irritability were similar to those in adult mania.