Disruptive mood dysregulation disorder — structured clinical viva

This is likely chronic nonepisodic severe irritability (DMDD/SMD phenotype) mislabelled as bipolar, with untreated ADHD and polypharmacy without manic episodes. Re-take multi-informant history for 12-month course, multi-setting severity, onset before age 10, and any true manic periods. If ODD also fully met, diagnose DMDD only by hierarchy.[1][6]

Medication reform. Plan supervised simplification: lithium lacks RCT support for SMD/nonepisodic irritability (Dickstein negative); risperidone — if continued at all — needs explicit aggression targets, metabolic monitoring, and exit criteria, not indefinite "bipolar maintenance." Prioritise ADHD treatment and intensive parent training + school plan; Waxmonsky-style structured parent–child therapy after stimulant stabilisation is a named model. Adjunctive SSRI (citalopram signal after stimulant; Towbin) only for residual severe irritability under specialist monitoring — not first before behavioural optimisation.[2][3][4]

Prognosis counselling. Explain chronic irritability is real and impairing but adult risk leans anxiety/depression and functional difficulty, not inevitable mania; SMD follow-up shows rare manic conversion versus narrow bipolar samples. Offer hope through skills and systems change while validating carer exhaustion.[5][6]