Hi, for the past year and a half Ive been having these events-they last only a few mins max, im still fully conscious, and its like a de ja vu feeling..it causes heart palpetations and a migraine afterwards..Ive seen a neurologist at the hospital and he seems to think its epilepsy , however the heart halter monitor test, ecg , eeg and sleep deprived eeg tests were all fine, and i think its definately something else, not epilepsy...what other causes could this be? could it be a result of blood sugar by any chance? today i had one thismorning after i got up and it was before breakfast, and ive just had another one after ive eaten lunch.. Thanks for your time, Sarah.