Anorexia Nervosa can be described as the following:
Weight loss, or in children a lack of weight gain, leading to a body weight of at least 15% 10% 20%( 15%, 10%, 20% ) below the normal or expected weight for age and height.

Anorexia nervosa can also be described as a widespread endocrine disorder involving the hypothalamic-pituitary gonadal axis.
This typically presents in women as amenorrhoea vomiting diarrhoea( amenorrhoea, vomiting, diarrhoea ) and in men as loss of sexual interest vomiting diarrhoea fatigue( loss of sexual interest, vomiting, diarrhoea, fatigue )

Bulimia Nervosa is described as recurrent episodes of overeating (at least 2 times 1 time 3 times( 2 times, 1 time, 3 times ) per week over a period of 3 months 6 months( 3 months, 6 months )) in which large amounts of food are consumed in short periods of time.
Patients counteract fattening effects of food by such things as self-induced vomiting, periods of starvation, etc.

Tooth decay is also known as dental caries cavies cathies cadies caveries( caries, cavies, cathies, cadies, caveries )

Calluses on the knuckles or back of the hand due to repeated self-induced vomiting over long periods of time is known as Russells' Wilson's Tinel's Phalen's( Russells', Wilson's, Tinel's, Phalen's ) sign