Rest‐Activity Rhythms and Suicidal Ideation in Pediatric Bipolar Disorder

Risk for suicide is disproportionately elevated among youth with bipolar spectrum disorder (BD), which is characterized by recurrent mood episodes and significant shifts in sleep and circadian rhythm. Disruptions in circadian rhythm, such as 24‐h rest‐activity patterns, are a relevant risk factor for SI, yet understudied in BD youth. The present cross‐sectional study examined the associations between actigraphy‐derived rest‐activity rhythms (RARs) and self‐reported suicidal ideation (SI) severity in a sample of 54 BD youth (aged 12–18 years).