Bulimia Nervosa (BN)
According to the Diagnostic and Statistical Manual of Mental Disorders, Bulimia Nervosa (BN) is characterized by:
- Recurrent episodes of binge eating characterized by BOTH of the following: - Eating in a discrete amount of time (within a 2-hour period) large amounts of food. 
- Sense of lack of control over eating during an episode. 
- Recurrent inappropriate compensatory behavior in order to prevent weight gain (purging). 
 
- The binge eating and compensatory behaviors both occur, on average, at least once a week for three months. 
- Self-evaluation is unduly influenced by body shape and weight. 
- The disturbance does not occur exclusively during episodes of anorexia nervosa. 
Symptoms explained:
Binge eating is different than simply overeating once in a while. Individuals with eating disorders often binge in secret and experience the feeling that they cannot stop and experience physical and/or emotional distress including feelings of extreme guilt, disgust, or shame. Purging behaviors may vary and often include vomiting, using laxatives/water pills, excessive exercise, or extreme food restriction after a binge. It is common for weight to shift dramatically during the course of Bulimia.
Warning Signs
- Signs of binge eating - disappearance of large amounts of food in short periods of time or finding wrappers and containers indicating the consumption of large amounts of food. 
- Evidence of purging behaviors, including frequent trips to the bathroom after meals, signs and/or smells of vomiting, presence of wrappers or packages of laxatives or diuretics. 
- Preoccupation with exercise; may have excessive, rigid exercise regimen. 
- Unusual swelling of the cheeks, salivary glands, and jaw area. 
- Calluses on the back of the hands and knuckles from self-induced vomiting. 
- Tooth discoloration, decay, or erosion of tooth enamel. 
- Evidence of laxative/diuretic overuse. 
- Creation of lifestyle schedules or rituals to make time for binge-and-purge sessions. 
- Withdrawal from usual friends and activities. 
- Behaviors and attitudes indicating that weight loss, dieting, and control of food are becoming primary concerns. 
- Continued exercise despite injury; injuries caused by overuse. 
- Common co-occurring disorders and behaviors include substance abuse, depression, anxiety disorders, shoplifting (often of food, laxatives, or diuretics), and suicidal thoughts or attempts. 
Health Complications
- Electrolyte imbalances caused by dehydration and loss of potassium, sodium and chloride, can lead to irregular heartbeats and possibly heart failure and death. 
- Potential for gastric rupture during periods of bingeing. 
- Inflammation and possible rupture of the esophagus from frequent vomiting. 
- Tooth decay and staining from stomach acids released during frequent vomiting. 
- Chronic irregular bowel movements and constipation as a result of laxative abuse. 
- Peptic ulcers and pancreatitis. 
- Fainting or loss of counsciousness, often due to low blood pressure. 
- Abnormal heartbeat. 
- Low body temperature. 
- Bone density loss (Osteoporosis). 

 
                      