Lyme borreliosis is the most common tick-borne disease which is caused by Borrelia burgdorferi and transmitted in the Poland, as well as Europe, primarily by Ixodes ticks. After inoculation spirochetes spreads in the skin, activate locally immune response mechanisms and cause characteristic skin lesions like erythema migrans, lymphadenosis benigna cutis, erythema migrans multiplex and acrodermatitis chronica atrophicans. The correct clinical diagnosis of skin lesions and antibiotic treatment is most important for regression of symptoms and prevention of late manifestations of Lyme disease.