I have been a compulsive eater for most of my life. Binge eating, whether chronic or episodic, is usually a way to deal with strong emotional states, whether feeling really manic or really depressed. The key is being able to identify when you are in a strong emotional state, and then have a strategy fro dealing with it (exercise, talking to a friend, an internal script, or reading something that brings you to equilibrium)
more info, more help if it is severe=
www.oa.org