Bulimia nervosa is a serious eating disorder. A person suffering from bulimia is said to be bulimic. Some of the signs and symptoms are: Significant weight loss, Lying about eating, Frequent trips to the bathroom after eating, Over-exercising. There are many more symptoms to looks out for. A more comprehensive list can be found here: http://www.something-fishy.org/isf/signssymptoms.php