Intermittent Explosive Disorder involves recurrent, impulsive, anger-driven aggressive outbursts -- verbal aggression or assault/destruction of property -- disproportionate to any provocation. Pyromania involves deliberate, purposeful fire-setting on more than one occasion, preceded by tension or affective arousal and followed by pleasure, gratification, or relief -- specifically NOT done out of anger or revenge, for monetary gain, or as an expression of sociopolitical ideology.
Intermittent Explosive Disorder can be diagnosed from age 6 onward, tied to episodic anger-driven outbursts. Pyromania's onset is less tightly age-bound in the criteria themselves but is defined by the specific tension-arousal-then-relief cycle around fire, distinguishing it from anger-driven destruction at any age.
Intermittent Explosive Disorder requires a specific frequency threshold (twice-weekly lower-intensity outbursts for 3 months, or 3 higher-intensity outbursts in 12 months). Pyromania requires deliberate fire-setting on more than one occasion, without a fixed frequency or duration threshold beyond that repetition.
Intermittent Explosive Disorder's outbursts, including property destruction, are driven by anger and are reactive to a triggering provocation. Pyromania's fire-setting is not primarily anger-driven -- it is associated with fascination with, interest in, curiosity about, or attraction to fire and its situational contexts, with the person often experiencing tension beforehand and gratification or relief afterward, regardless of any provocation.
Intermittent Explosive Disorder's impairment stems from the disproportionate, unpredictable aggressive outbursts and their relational, occupational, and legal consequences. Pyromania's impairment stems from the serious safety, legal, and property consequences of deliberate fire-setting, often compounded by the person's difficulty resisting the impulse despite awareness of the danger and consequences.
Intermittent Explosive Disorder specifically excludes premeditated aggression. Pyromania specifically excludes fire-setting done out of anger or revenge, for monetary gain, to conceal criminal activity, in response to a delusion or hallucination, due to impaired judgment (e.g., intoxication, neurocognitive disorder), or as a result of Conduct Disorder, a manic episode, or antisocial personality disorder.
If a fire is set in a fit of rage, as an act of revenge, or for material gain, Pyromania's specific exclusions rule it out -- this would instead be considered under Intermittent Explosive Disorder (if the pattern fits) or another explanation entirely. Pyromania requires the specific tension-then-relief cycle around fire itself, independent of anger or external motive, which is the deciding feature separating it from an anger-driven destructive outburst.
Any act of setting a fire in anger is sometimes assumed to indicate Pyromania, but Pyromania's criteria specifically exclude fire-setting motivated by anger or revenge -- such cases point instead toward Intermittent Explosive Disorder (if the broader pattern fits) rather than Pyromania.
After a heated argument, a person impulsively sets fire to an ex-partner's belongings out of rage, with no history of fire-fascination -- this exclusion rules out Pyromania and points instead toward Intermittent Explosive Disorder if the broader anger-outburst pattern fits. A person reports a longstanding fascination with fire, feeling mounting tension before setting small fires and profound relief afterward, unrelated to any anger or provocation -- Pyromania.
| Feature | Intermittent Explosive Disorder | Pyromania |
|---|---|---|
| Core driver | Anger, disproportionate to a provocation | Tension/arousal followed by pleasure or relief, independent of anger |
| Target of the act | Verbal aggression, assault, or property destruction generally | Fire-setting specifically |
| Anger-driven fire-setting | Consistent with this disorder's pattern, if criteria otherwise fit | Explicitly excluded from this diagnosis |
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+.
Deliberate, purposeful fire-setting on more than one occasion, preceded by tension or emotional arousal and followed by pleasure, gratification, or relief, without a motive like profit, revenge, or concealing a crime.