Question

what is the primary difference between anorexia nervosa and bulimia nervosa?
anorexia causes physical pain, whereas bulimia does not.
anorexia is a chronic condition, whereas bulimia is often short term.
anorexia typically develops in childhood or adolescence, whereas bulimia often develops in adulthood.
people with anorexia are usually underweight, whereas people with bulimia are often at normal weight.

Explanation:

Anorexia nervosa is characterized by self - starvation and extreme weight loss leading to underweight status. Bulimia nervosa involves episodes of binge - eating followed by purging behaviors, and individuals often maintain a normal weight. Physical pain can occur in both, both can be chronic, and they can develop at various ages.

Answer:

People with anorexia are usually underweight, whereas people with bulimia are often at normal weight.