Lyme disease is an unusual illness. It occurs commonly, but it causes unique and confusing symptoms over time. It is often difficult to discern if you have Lyme disease in the early stages, but this is critical. Lyme disease is caused by the bacterium Borrelia burgdorferi and, Borrelia mayonii, which are spread through a bite from a tick. A tick is a tiny parasite and arachnid that feeds off the blood of a host, such ...