Final answer:
Perfectionism is an unhealthy compulsion to do things perfectly, which can lead to mental health challenges like eating disorders; it's not the same as narcissism or other disorders such as OCD.
Step-by-step explanation:
An unhealthy compulsion to do things perfectly is known as Perfectionism. Although it is not an official clinical diagnosis like Obsessive-Compulsive Disorder, perfectionism can lead to significant stress and mental health challenges, including eating disorders such as anorexia nervosa and bulimia nervosa. These mental illnesses involve compulsive behaviors around eating and can create physical, mental, and emotional health problems. It's also important to differentiate between these behaviors and narcissism, which is characterized by an inflated self-image and lack of empathy for others. Treatment for eating disorders and related mental health issues can include counseling and medication.