What Causes Seizures After Silicone Breast Implants Surgery?

I had silicone breast implants removed in Sept. of this year. The beginning of this year i started having seizure like spells that are not being generated by my brain. All tests have been done with normal results. I am no longer able to work as I have multiple spells daily. extreme weigh loss and fatigue. The implants were put in 40 years ago in Mexico they have been leaking for several years and no way, or so i have been told to find out what was in them. I am absolutely at the end of my rope. I have kaiser and my medical team has shut the door on me and refuse to do further testing,,,,,any thoughts would be very very much appreciated!!