Extreme hunger in recovery is not binge eating disorder.

It's really important that the extreme hunger is recognized as a result of starving and accept it, and not interpret it as a if you have switched to a binge eating disorder, because if you think you have got a binge eating disorder you may start restricting, purging or strain yourself in exercise and then what may happen is that you overshoot your set point weight way more than you would if you didn't. I just read about a girl this happened to, and I have experienced it myself as well. It happened because we hadn't heard about the things written at youreatopia. We didn't know what to expect in recovery and misunderstood. When we think about those who end up as obese after recovering from anorexia or bulimia, this is probably what happened to them. To solve this and get to the set point weight they must eat the minimum calories (meaning enough) and eat more if they are hungry and not restrict at all so the body has the energy to do the last part of the healing process. Then they will stop eating more than minimum when the body has got what it needs to do it and the weight will fall to set point by it self without restricting at all.

http://www.youreatopia.com/blog/2012/5/22/extreme-hunger-what-is-it.html
http://www.youreatopia.com/blog/2013/4/9/extreme-hunger-profoundly-disturbing.html