Hi, Pre-auricular sinuses are abnormal tract from skin surface to subcutaneous tissue, and sometimes even deeper. Usually these are not removed. But in cases with recurrent infection, it is better to remover surgically- usually a minor procedure, which you need not worry about. Progressives episodes may make the surgery more and more difficult because for progressive scarring- so delay is better avoided. Apart from keeping the area clean and dry and avoiding purposeful squeezing, there nothing much that can be done to avoid getting infected. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Muhammed Aslam T. K., Pediatrician