State of Confusion. If nothing happened.

Just over a year ago, I began having seizures for the first time in my life. All tests for brain malformations were negative, and the cause seemed to be a severe vitamin deficiency. I have since been on medication for the problem that has handled it well. However, I have since occasionally been getting these strange episodes that do not seem to be seizure like in nature, and that no one can seem to link to one thing or explain. The episodes begin with the onset of extreme confusion, I cannot keep track of my current tasks or continue a conversation. All words spoken by me or to me sound nonsensical. Then, my body becomes slightly tingly but not completely numb, and my hearing fades as if going down a long tunnel or having someone's hands over my ears. I then seem to "pass out" without losing consciousness for a few moments. I retain the inability to form coherent sentences for several minutes after the episode but can otherwise function very well as if nothing happened.