Meningoradiculitis due to tick-bite is rare and poorly documented. Its etiology remains hypothetical, but is thought to be caused by a viral infection carried by the tick. It is characterized by a striking clinical picture, especially symptoms of a subjective nature. The involved area extends asymmetrically from the site of the bite with variable latency. The CSF is characteristic, showing definite lymphocytosis and a moderate protein reaction. The prognosis is excellent although recovery may take several months. In the event of facial paralysis, there is a risk of postparalytic spasms. Treatment is symptomatic; no drug has proved effective.