Rage?

Is rage a normal reaction to stressful situations? Sometimes when I'm triggered or when things have been building up over time, I snap and go into a fit of rage where I end up screaming, breaking things and hitting walls and just going mad. I really can't control it once I've hit my boiling point. I've never seen anything like it so I'm assuming it's not normal. But why do I get like this? What's causing it?