Final answer:
Adolescents with anorexia nervosa often have a distorted body image, viewing themselves as overweight even though they are not. This condition is known as body dysmorphic disorder.
Step-by-step explanation:
The adolescent with anorexia nervosa has a body self-image characteristically expressed by feeling "fat" even when appearing thin. Individuals with anorexia nervosa often have a distorted body image, viewing themselves as overweight even though they are not. This misperception of one's true body size and shape, along with dissatisfaction with that misperception, is called body dysmorphic disorder.