Lyme borreliosis.

Lyme borreliosis is a cutaneous-systemic infection that is generally transmitted by a hard-bodied tick and caused by some species of Borrelia, Borrelia burgdorferi (sensu stricto), B. garini, and B. afzelii. Lyme borreliosis is a widespread disease, present in all continents. It can be divided into an early disease, corresponding to the primary stage, and a late disease, including the secondary and tertiary stages. The typical cutaneous lesions are erythema (chronicum) migrans, lymphadenosis benigna cutis, and acrodermatitis chronica atrophicans. The course of Lyme borreliosis depends on the timeliness of both diagnosis and antibiotic treatment.