Notes on Post-Infection Arthritis and Fibromyalgia Pain 27 Oct 2026 1. Arthritis, Infected Knee, or Lyme Disease? In 2024, I did two things to my right knee that turned out to be stupid. 1) I mowed down the very tall grass at the bottom of the hill in August, without putting on bug repellent. I had a rash on the antecubital area behind the knee that started a few days after I mowed the lawn. It was mildly itchy, but not in the shape of a target. I ignored it, and it went away after about a week. 2) After getting a flat tire in the early morning (in Kamloops), I walked a mile or so around the town to keep warm until the garages opened up. The next day, I had a bubble filled with fluid on my right knee with pain and reduced range of motion. These symptoms were consistent with lyme arthritis. The fluid bubble and pain stayed with me, increasing and decreasing in a cycle. Because I could not document a target-rash, doxycycline was not provided...