Lyme disease is genetic.
Lyme disease , also known as Lyme borreliosis , is an infectious disease caused by bacteria of the Borrelia type . The most common sign of infection is an expanding area of redness on the skin , known as erythema migrans , that begins at the site of a tick bite about a week after it has occurred . Infections are most common in the spring and early summer . Some healthcare providers claim that it is due to ongoing infection ; however , this is not believed to be true .