Side note: epilepsy runs strongly in my family with many male cousins on one side having been diagnosed with some form of it in their lifetimes. Most grew out of it after childhood.
I'm 41 now, but my father died when I was 19. I had already done LSD many times at that point in my life and I am a regular cannabis user to this day, but I decided that I would take a large amount of LSD that summer at a festival to find some closure with my father's death.
With no one else in our group having tried any of this acid yet, we show up at the festival and with the ten strip I had purchased for the weekend, one friend took 1, another took 2, I took the other 7. This was a major mistake...
My friends all went up to see the afternoon show when the two who ate the ten strip with me realize that this acid was way way WAY stronger than anything they had ever taken before, so they all come back to camp where they found that I had stripped down to my underwear and had been swimming in a stagnant pond that was roped off. I remember almost none of this, mind you, and I have never been able to remember it, but finally I came down to the point that I could talk after many hours.
About 6 months later I started having partial seizures, which was just a feeling like you are describing. I honestly thought that these were "flashbacks" at the time as I didn't know what partials were and they affected my senses like I was hallucinating. Within another 6 months I started having TCs. I pass out when they happen, but I already have some kinda partial before I pass out, so I can tell if I'm about to seize. I didn't always seize when I havd a partial, but as I've gotten older TCs almost always follow.
I have brought this up with many neurologists since that time and all of them have ho-hummed about it with most saying that either the two are not connected or that they might be connected, but since whatever the acid might have damaged is in the past; they seem more concerned with treating symptoms than determining the cause.
Does LSD cause me to seize? No, not directly. For me it's more like there comes times in my life where the curtain between being normality and epilepsy gets thinner and thinner until finally my body will have a seizure. I can help make the probability of having a seizure less by doing things like making sure I get a full night of sleep, eating (I don't have the strongest appetite), not drinking, limiting caffeine and staying away from energy drinks, no hard drugs, and taking my prescribed medicines as prescribed. The jury is still out for me on if LSD has negative effects of I don't overdue it. Cannabis doesn't seem to have a negative effect on my risk of having a seizure, so I tend to smoke daily when I can. There is no one individual thing that can cause me to have a seizure.
Tl;Dr - I ate more acid than I should have when I was younger and my epilepsy came out shortly after that. All the neurologists I have had in my life seem to blow it off when I bring up the experience