They can all cause fever and fatigue, but the joint pain in Lyme, the most common of these diseases, was usually limited to one side. Rheumatoid arthritis (R.A.) often causes joint pain that can be worse in the hands. Celiac disease, an autoimmune disorder, can cause this combination of gastrointestinal distress and joint pain. She didn’t have celiac disease or R.A. She didn’t have Lyme disease either. B. miyamotoi, like Lyme, is carried by the black-legged deer tick, but it’s a much easier infection to get.

Source: New York Times July 15, 2020 09:00 UTC