A 17 year-old female is suffering from insomnia from last 6 months. She also informs about her changed eating habit . She eats alot of food even after eating her evening meals and also wakes up frequently at night to eat again . Due to such behaviour she usually skips her breakfast . She doesn't seem much concerned about her appearance and weight gain . What shall be your probable diagnosis ?
Night eating syndrome Bulimia nervosa Anorexia nervosa Binge eating disorder