Well that explains it...

Driving home just now I was listening to the radio. Over the air waves came the lyrical voice of John Tesh, doing his daily show, dispensing helpful advice to his listeners between songs. Today's topic was anger. Do you ever get really angry at other drivers? Do you shake your fist or yell at them? Does your anger go from zero to fifty in a matter of seconds? Well, if so, you may have Intermittent Eruptive Disorder or IED. IED usually begins to manifest itself in early adolescence. It often takes the form of road rage, a desire for vengeance, or fury at one's mate.
 
In my case, it generally involves a mad dash to the bathroom after a spicy meal, but I am glad to know that I'm not alone in my struggle.