It can have many causes, among them Schizophrenia and weight loss pills. The evolution goes from total cure in a few days until a very bad chronification. A rapid onset of treatment is very important. The patient alternates between depressive and agitated phases. The preventive treatment is very important, as the phases usually get more and more frequent.
Some Patients even eat their own hair.
Even in the cases where the person gets almost bold, the hair usually grows up again. They stop eating, menstruating and exercise too much. The lethality and the risk of chronification are very high. Unfortunately, many parents become aware of the seriousness of this disease when it is already too late. They eat huge amounts of food and then provoke vomits.