It is the response to the bacteria load dying and releasing toxins in your body. Your body is not able to clear the toxins quickly enough which can cause
, joint aches, muscle pain, ringing in your ears, brain fog, headaches, severe fatigue, etc. You may not experience all of these symptoms. The reaction you have is based on bacteria load as well as whether or not the Lyme has penetrated your central nervous system and brain which it can do within 48 hours of being infected.