Understanding and experimentally approaching the processes that underl
ie the origin and progression of many severe neurological disorders pr
esents a challenge to both clinical and basic researchers. We have fou
nd that the origin of some neurological diseases, including a rare for
m of childhood epilepsy and a neurodegenerative disease associated wit
h peripheral cancers, may be related to production of physiologically
active autoantibodies that are directed towards excitatory ionotropic
glutamate receptors of the brain. This suggests that some neurological
diseases may result from dysfunction of the immune system.