Everything.
Shakes, twitching, heart palpatations, massive anxiety, hallucinations.
Before I had my first seizure three years ago, i'd lie in bed at night and my mind would just race. All manner of random images would come into my head.
Whenever I lay down and drift off I would kick out or spasm like many people do when they are drifting off, but this was every single time I tried to sleep.
So I spent many nights sat up with the light on, inevitably drinking more.
The seizures eventually came. To be honest I wouldn't have known I had them unless someone had been there to witness it, but a couple of weeks ago I actually felt one coming.
I'm unsure if I had one or not as I was alone, but i'm pretty sure I did.