Dehydration or something else?

18F, 5,4 150lb, I don’t take medications, I smoke cigarettes and vape, and I get hemiplegic migraines.

So sometimes I will get these very fast overwhelming feelings of fear and panic, like i feel like every person around me is out to get me, not like judging but like they hate me. And i feel like im going to die. And at the same time i feel like my thoughts are moving too fast, like each word I think is on 2x speed and I can't calm my mind. I also start to feel really twitchy like in my neck especially. And when i speak to people i feel like im speaking way to fast even though im not and i feel like everyone is staring at me and they can all see that im twitching. But when i chug water it goes away after a bit. But it happens kinda frequently and out of nowhere...