Harvard Health Blog
Chronic Lyme arthritis: A mystery solved?
By: John Ross, MD, FIDSA, Contributing Editor In 1975, researchers from Yale investigated an epidemic of 51 patients with arthritis who lived near the woodsy town of Lyme, Connecticut. The most common symptom was recurrent attacks of knee swelling. A few had pain in other joints, such as the wrist or ankle. Many had fever, fatigue, and headache. Some remembered a round skin rash before the onset of knee swelling.