An eating disorder in which one alternates between abnormal craving for and aversion to food.It is characterized by episodes of excessive food intake followed by periods of fasting and self - induced vomiting or diarrhea.

• 饮食失常一种饮食无序，在这种情况下，一个人常常处于不正常的贪食和厌食的交替状态，特点是偶尔的暴饮暴食继而又很快的引起呕吐或腹泻