Partial paralysis

I was diagnosed with epilepsy in 1992.  Have a VNS.  My seizures were Grandmal.

This has happened twice a year. 2 in (Since 2006)-    1 in (2007)-    2 in (2008) and as of today 2 this year.(2009)

My sympotoms: starts off with nausea which is very bad,  lightheadness, dizziness, weakness, ee,headache, fatigue, agitation, with-in 5 to 10 min I start lossing the lower the muscle movement temporary paralysis of my leg's.  

I remain conscious at all times.  The paralysis can last up to 4 to 6 hrs and the next day a little unsteady with walking and weakness.    Please someone let me know if you are having this problem or any help.

The nausea last for up to 24 hrs.