[Unusual clinical manifestation of Lyme disease--report of 2 cases].

Unusual clinical manifestation of Lyme borreliosis in two children has been presented. We discuss patient from Borrelia-endemic area who presented with persistent headache, weakness and fever. The second patient experienced acute flu-like signs with associated neck pain and stiffness (probable diagnosis). After two weeks lasting antibiotic therapy (ceftriaxone, ampicillin) nonspecific symptoms and signs decreased.