Answer:
It is an internal conflict.
Step-by-step explanation:
It is a case of internal conflict because the character struggles with his or her physical appearance. Internal conflicts happen inside the character's mind. They are related to feelings, mental illnesses, and emotions. These types of problems tell us about the person.
In an external conflict, the character struggles with another character or something, such as a group of people, natural catastrophes, animals, etc. The thing that they deal with is not inside themselves. They create problems in the story.