(medicine) Infection by one of three or more subspecies of the bacterium Borrelia burgdorferi, which is transmitted by four species of tick in genus Ixodes. Symptoms include a rash followed by fever, joint pain, and headaches.

plural of Lyme disease

A long-term recurring condition of disputed veracity in some persons who have recovered from Lyme disease, resulting in presentation of Lyme-like symptoms.