My son, 23, just removed a tick from his leg Saturday. The leg is very sore at the site of the bite and had a small, dime size, rash around it. Today the rash has expanded to larger than a quarter. I am hoping to get a local physician to order a course of antibiotics for him and was hoping someone could recommend the treatment protocol for him to request. Am going to try and get him to a Dr. today. Thanks.