Childhood Irritability Disorder: A Proposal for DSM Conditions for Further Study

Childhood irritability, characterized by a persistently low threshold for frustration and pervasive angry mood, is among the most common reasons for psychiatric referral yet remains diagnostically marginalized. Current Diagnostic and Statistical Manual of Mental Disorders ( DSM) categories—disruptive mood dysregulation disorder, oppositional defiant disorder, and intermittent explosive disorder—do not adequately capture children with persistent irritability who lack recurrent explosive outbursts or defiance. This Clinical Perspective proposes including childhood irritability disorder (CID) in the DSM “Conditions for Further Study” section. CID would be defined by chronic irritability present across settings for at least 6 months, onset before age 10, and associated functional impairment, with optional specifiers for temper outbursts and defiance. Dimensional thresholds, such as the Affective Reactivity Index, provide anchors for clinical severity. Recognition of CID would enhance diagnostic clarity, reduce treatment variability, and yield more homogeneous research cohorts. Field trials are needed to establish reliability and validity, but formal inclusion represents a necessary step toward addressing this under-recognized and impairing presentation.