Bannwarth's syndrome is a tick-transmitted neurological disease caused by spirochetes of the Borrelia burgdorferi group. Neurological manifestations of the disease occur after skin erythema and include: neuritic pain, lymphocytic pleocytosis without headache and sometimes cranial neuritis. We present the case of a man who complained of a neurological syndrome without evidence of tick bite and concurrent manifestation of the infection, for whom serological analysis only revealed the infection after testing repetitive specimens. We discuss the need to start early therapy when clinical manifestations are suggestive of the disease in endemic areas.
