After two seizures, a 13 year-old boy experienced headache, fatigue an
d loss of appetite over a period of 3 weeks. There was a bilateral pap
illedema with normal visual acuity. CT and MRI disclosed two ischemic
foci, that were interpretated as evidence of vasculitis. High serum le
vels of IgG and IgM antibodies specific to Borrelia burgdorferi, were
present. The patient had attended an outdoor scout camp in a area, in
south-east Belgium, known to be endemic for tick-born borreliosis. The
clinical symptoms, the levels of the specific antibodies and the radi
ologic abnormalities responded dramatically to treatment. We believe t
hat seizures in this case were related to cerebral vasculitis. This ca
se confirms the extreme diversity of the neurological manifestations o
f Borreliosis.