Explanation: Bulimia nervosa is a serious eating disorder that consists of eating large amounts of food and then purges to get rid of extra calories. As you might know, when you throw up, some acid in your stomach also goes out with the food. This stomach acid weakens your tooth enamel.
Antibiotics kill bacteria but they won't kill ringworm which is most likely the reason why it is so hard to eliminate the ringworm disease.. Hope this helps!