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Dear Anne,
There are many disorders which cause over-eating, which can lead to obesity. You did not state your son's weight, or if his uncontrollable eating is associated with recurrent compensatory behaviors to prevent weight gain, such as self-induced vomiting, repeated laxative or diuretic use, or excessive exercise. If this should be the case, a diagnosis of bulimia nervosa is likely.
Over-eating may also be seen in medical conditions such as hypothyroidism, and in rare syndromes such as Kluver-Bucy syndrome and Kleine-Levin syndrome, to name a few.
The good news is that eating disorders can be successfully treated with cognitive-behavioral therapy, group therapy, family therapy, and medications.
I hope you find this information helpful. It is provided for general medical educational purposes only, and should not replace consultation with a doctor for diagnostic and treatment options. Henry Ford Behavioral Services provides confidential evaluation, available by calling (313) 874-6680 for an appointment.
Keywords: obesity, bulimia, hypothyroidism, cognitive-behavioral therapy, Kluver-Bucy syndrome, Kleine-Levin syndrome