Thirty-seven children with skin manifestations of Lyme borreliosis (31 with erythema chronicum migrans and six with lymphadenosis benigna cutis) were treated and followed up prospectivelly for 1-24 months (mean 7.58 months). The diagnosis was confirmed serologically by the finding of increased levels of antiborrelial antibodies assessed by the ELISA method, using antigen from Borrelia recurrentis, in a total of 87% patients with erythema chronicum migrans and in all patients with lymphadenosis benigna cutis. In nine patients the dermatoses were associated with general non-characteristic symptoms, after antibiotic treatment in five patients temporary fatigue, arthralgia and gastrointestinal complaints were observed. No extradermal organ complications were present. The authors discuss the clinical pictures of erythema chronicum migrans and lymphadenosis benigna cutis in children, mention diagnostic criteria and the recommended pattern of treatment.