Final answer:
The confusion in the question arises from the mention of pica, but the condition described in the sketches is anorexia nervosa. Anorexia nervosa is characterized by severe weight loss due to restrictive eating and fear of gaining weight, not the consumption of non-food items as seen in pica.
Step-by-step explanation:
The disease process being referred to in the question is pica, which is distinct from the other disorders mentioned. Pica involves the compulsive eating of non-food items, such as paper, dirt, or paint chips. However, the question seems to confuse pica with the eating disorder being described in the sketches. The condition exhibited by the child in the sketches is anorexia nervosa, an eating disorder characterized by an extreme fear of gaining weight and a distorted body image, leading to severe weight loss and potentially life-threatening malnutrition. The child was not suffering from pica or bulimia nervosa, which involves cycles of binge eating and compensatory behaviors like purging.