This article on Catamenial Epilepsy or the menstrual connection to seizures is dated 1998, but think it is worth the read until I can come up with a better one...
http://www.epilepsyontario.org/sharing/98c/noldy.html

Also, this more recent article on a study of Estrogen's effect on seizures from a researcher at Northewestern University...
http://www.efa.org/services/wei/research.html

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Beth's Mom