Anorexia nervosa can be erentiated from bulimia by-
Patients with anorexia nervosa exhibit peculiar behavior about food. They hide food all over the house and frequently carry large quantities of candies in their pockets and purses. They cut their meals into very small pieces and spend a great deal of time rearranging the pieces on their plates. While eating meals, they try to dispose of food in their napkins or hide it in their pockets.
This peculiar behavior about food is not seen in bulimia nervosa.

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Both anorexia and bulimia patients have fear of weight gain.
The onset of both is in adolescence (Anorexia early adolescence; bulimia late adolescence).
Body - image disturbance is seen in both diseases.
Intense fear of wt gain
Disturbance of body image
Adolescent age
Peculiar patterns of food handling