A Herx, more formally known as a Herxheimer reaction, is when there is a massive die-off of bacteria and your body is suddenly overrun by toxins. Your system freaks out, because you are filling up with toxins faster than your body can purge them.

This life-saving guide - written by one of the nations top Lyme physicians, Dr. Hart - will help take the 'bite' out of your Herx.