This disorder is characterized by the abnormal feeding habits.  This may lead to critical weight loss, nutritional deficiency and decrease in psychosocial functioning. In this instance, the causes are not attributed to a physical condition.
Avoidant or restrictive food intake disorder
Anorexia nervosa risk factors
Night eating syndrome
Compulsive overeating
Insomnia etiology
Major depressive disorder risk factors
Compulsive overeater
Exercise bulimia