Bulimia nervosa is characterized by a lack of inhibitory control and hyperimpulsivity.

“But first of all, the bulimic, unlike the anorexic is hyper impulsive and oftentimes has other types of impulse behaviors. They might have a little bit of alcohol and then start to eat like crazy. Whereas normally they're very restrictive. That's a common feature of bulimia, sometimes they over ingest alcohol during these binges. Sometimes they are sexually promiscuous, not always, but it's a general issue with satiety once they start eating and with impulse control generally.”