[Acrodermatitis chronica atrophicans in the course of old Lyme disease].

Lyme borreliosis is chronic spirochetal infection with phasic course. Lyme disease can be recognised as early or late stage of disease. A case report of patient with acrodermatitis chronica atrophicans in the course of chronic (late) Lyme borreliosis is presented. As it is described, the lack of uncognition of infection of B. burgdorferi and typical signs of erythema migrans as well as a lack of proper therapy in this time may be a reason of passing into chronic phase of the disease like ACA and Lyme arthritis.