There is a very good cream with anit-biotic and benzyl peroxide. As I know, My doctor has the samples of this cream. One of my friend tried and worked for her. You can try it first, If it works for your son, he can write your son the prescription. He is a general practioner. You can make a appointment with him and his chinese secretary works on Wednesday morning. If there is no one answer the phone, you can just leave a message and his secretary will call you back. The clinic phone number is 514 - 935 4434.