Both involve recurrent, disproportionate anger outbursts, but IED does not require the persistent between-outburst irritable mood that DMDD specifically requires, and the two have different age frameworks.
DMDD requires onset before age 10 and is only diagnosed ages 6-18; IED is most commonly diagnosed from late childhood/adolescence onward but has no such strict age-of-onset ceiling and can be diagnosed in adults.
DMDD requires the pattern for 12+ months without a long symptom-free gap; IED requires either twice-weekly lower-severity outbursts for 3 months or 3+ severe outbursts within 12 months.
DMDD carries longitudinal risk toward unipolar depression and anxiety; IED is associated with impulse-control difficulties more broadly and can co-occur with substance use disorders in adults.
Both can lead to significant relational and, in IED's case, legal consequences from property damage or injury during outbursts.
If DMDD's full criteria (including the persistent between-outburst mood requirement and the before-age-10 onset) are met, DMDD is the more specific and appropriate diagnosis rather than IED.
Check for the persistent between-outburst irritable mood (DMDD-specific) and the strict childhood age framework (DMDD-specific) -- their absence, in an older adolescent or adult with impulsive disproportionate outbursts, points toward IED instead.
Both are colloquially described as 'anger issues,' obscuring DMDD's required persistent mood component and its childhood-onset framework, which IED does not share.
A 9-year-old with frequent explosive outbursts who is also persistently irritable between them fits DMDD's specific pattern; a 35-year-old with periodic, severe, impulsive outbursts and a normal mood baseline between them fits IED instead.
| Feature | Intermittent Explosive Disorder | Disruptive Mood Dysregulation Disorder |
|---|---|---|
| Between-episode mood | IED: not required to be persistently abnormal | DMDD: persistently irritable/angry, required |
| Age framework | IED: age 6+, no upper ceiling, diagnosable in adults | DMDD: onset before 10, diagnosed only ages 6-18 |
| Outburst frequency thresholds | IED: 2x/week for 3 months (mild) or 3+/year (severe) | DMDD: 3+ times/week on average |
Recurrent behavioral outbursts representing a failure to control aggressive impulses, grossly out of proportion to the provocation, that are impulsive/anger-based rather than premeditated, causing distress or impairment, in a person typically age 6+.
Severe, recurrent temper outbursts grossly out of proportion to the situation, occurring 3+ times per week, against a backdrop of persistently irritable or angry mood between outbursts, with onset before age 10 -- designed to reduce over-diagnosis of pediatric Bipolar Disorder.