Bulimia nervosa includes three types:
• Anorexic Bulimia Nervosa;
• Simple Bulimia Nervosa;
• Multi-impulsive Bulimia Nervosa.

 Simple Bulimia Nervosa is a sickness that begins after a period of stress or unhappiness. It usually happens with young women. A girl feels stress then she falls out with a boyfriend. The feeling of self dislike focuses on appearance and dieting is begun in an attempt to improve self esteem. In contrast to an anorexic the diet is not very successful with the rigid control needed breaking down into bouts of cheating. Vomiting is used to achieve the weight loss and so the cycle of bingeing and vomiting begins.

  The weight will remain close to normal but the eating pattern becomes gradually worse. There is more loss of control as the body's normal mechanisms of appetite control are over ridden and confused.  Simple Bulimia Nervosa is the least severe but the severity varies considerably. There are many girls with Bulimic symptoms that never seeked for medical help but there is a significant risk that it will slowly get worse with time. A common time for sufferers to seek help is when they are planning to start a family in their early twenties and are concerned about possible effects on having babies.

  Anorexic Bulimia is a type of the Bulimia Nervosa. The anorexic episode usually is a short one and the sufferers begin to recover without treatment. Bulimic ones have a weight just about 45 kg. and irregular menstruation. The control of the anorexic is not protracted and bingeing  often begins in a very small way but becomes more strict especially at once vomiting begins. Often they begin by vomiting after what would for a normal person be an ordinary meal but this leads to a loss of control of the appetite drive.

    Occasionally the vomiting starts first but then there is a period of significant weight loss in an anorexic phase that includes restrictive eating. The illness becomes dominated by vomiting behaviour but the weight remains low for a while before gradually rising to near and in time above normal. The seriousness of anorexic bulimia stems mainly from two factors, the first being that the individual may revert to restrictive dietary measures and relapse into anorexia. The second most serious element of anorexic bulimia nervosa is on the toll repeated vomiting takes on the digestive system. People with anorexic bulimia nervosa are likely to need hospitalization especially if weight loss becomes a factor in their illness. Restoration of normal weight is essential to appetite control.