Rage (or mind your own business)

Here's an article on intermittent explosive disorder, or IED. I always suspected that there was eventually going to be some "condition" for this type of behavior. Everyone has seen this guy (usually a guy, but sometimes a woman). The first thing that comes to mind is the "Are you kidding me?!!!" exclamations of John McEnroe. I knew a guy at work who got fired for road rage, he tried to intentionally run a guy off the road. I've seen people totally blow up over nothing, and while it's still not acceptable, it's more understandable if there's alcohol involved, but these people are dead sober. I guess I've lost it a couple of times when it really wasn't appropriate, but, hey, I'm not crazy. Or am I?