Is it a seizure?

I have had epilepsy my entire life.  For the past 25 years I have been almost 100% controlled with the exception of a few complex partial seizures.  However, 3 years ago I began having the most unbelievable experiences that still have not been completely diagnosed.  I have these episodes where I lose all feeling in my legs and cannot feel my feet touch the floor, my speech becomes slurred, I get dizzy and see stars, sometimes I feel paralyzed on the right side of my face, and I feel like I am in a different world.  I was diagnosed with TIA's but I am not convinced at all that that is what they are.  I have no inidcators of hardening of the arteries or any other symptom that would give me a TIA.  My present neuro says that they are seizures and auras and he put me on an additonal medication.  I had a total hysterectomy 2 years ago and when my gynecological problems started so did these episodes.  Has anyone ever heard of something like ths?  I was checked for all the obvious, brain tumor, MS, muscle problems, just to name a few.  I am desperate and confused.