The Importance of Second-Generation Antipsychotic-Related Weight Gain and Adherence Barriers in Youth with Bipolar Disorders: Patient, Parent, and Provider Perspectives.

: Objectives: The objective of this research was to understand physician, patient, and parent perspectives on barriers to second-generation antipsychotic (SGA) medication adherence in youth with bipolar spectrum disorders, and attitudes toward treatment of SGA-related weight gain. Methods: Patients diagnosed with bipolar disorder before age 18, parents of children diagnosed before 18, and clinicians with experience prescribing SGAs for these patients completed surveys regarding SGA-related side effects, adherence barriers, and acceptability of weight management strategies. Results: Patients (n = 225), parents (n = 128), and clinicians (n = 54) reported weight gain as the most concerning SGA-related side effect (45.6%, 38.9%, and 70.4%, respectively). Weight gain was also the top adherence barrier for patients (35.9%), but was ranked fourth (41.8%) by parents. Patients (61.5%) were more likely "definitely" willing to co-initiate another medication to manage weight gain upon SGA initiation than parents (20.1%) or clinicians (1.9%). Conversely, parents (54.9%) and clinicians (84.9%) were "definitely" willing to accept/prescribe a second medication aiming to reverse weight gain of ≥10 lbs., and patients (61.1%) were willing to add another medication to reverse any weight gain. Conclusion: SGA-related weight gain impairs medication adherence in young patients with bipolar disorder. Many young patients would start pharmacologic treatment to mitigate SGA-related weight gain at treatment initiation, parents and clinicians are more hesitant. This research informs patient-centered perspectives on SGA adherence barriers and strategies to minimize potential side effects, which may improve adherence in this vulnerable patient population.