Hypomanic you are able to function. You are unusually happy. You have more energy. Less need to sleep. However, you can be super productive also. You don't have psychosis. People can live fairly normally hypomanic. However, for people with bipolar 1 disorder, hypomania can evolve into mania. Mania is a state of chaos. Your thoughts are random and jumbled. You have what's known as "pressured speech". Your behavior is irrational and erratic and everyone external to you can see it. You often suffer from delusions of grandeur. You sometimes hallucinate. Worst, you have no idea you are manic. You lack insight. You think everyone saying you are manic are just jealous or out to get you. Often you have sensory changes. Everything is louder, brighter, more odorous, and touch is extremely sensitive. Also, everyone around you moves and talks so darn slow it makes you nuts. Remember records? When you are manic you are at 78 rpm. Everyone else you perceive is at 33 rpm. Mania is a psychiatric emergency.