[Lesions of the nervous system in tick-borne erythema annulare]

The authors examined thirty-two patients with tick-borne erythema annulare which developed after tick bites. The disease had a peculiar nosological form and was characterized by tick sticking, an incubation period, the presence in the majority of patients of the temperature reaction and manifestations of general infection in the acute period, the development of migrating erythema annulare, frequent lesions (26 patients) of the nervous system in the form of the radicular symptoms, serous meningitis, pareses of the facial muscles, etc. Electrophysiological examination of patients revealed marked changes. Serological tests for tick-borne encephalitis proved negative. The time-course of the disease in the majority of patients was favourable. The disease was characterized by all features typical of an infection lesion, with neurological disorders being predominant, which requires further investigation.