Hello from JustAnswer.
Could you attach a picture of the rash?
I have asked for a picture of the rash and have not heard back.
There are many different possible causes of a rash. Since the Epaderm has not helped, another option would be to try an over the counter hydrocortisone cream, which can help relieve inflammation in the skin.
The other major consideration would be if there is any residual infection. Your doctor apparently has thought that there is not any infection, since additional antibiotics have not been prescribed, but that is the other reason for reviewing a picture.
If i can provide any additional information, please let me know.