I can't believe how old this forum is...But this was the first link I found when I typed it into google, I've been smoking every day for 5 years now and this shit only happen to me for the first time yesterday!!! I was soooo scared that I thought I was seriously gonna die, but it all passed within 30 minutes, it happend just like the guy said on the forum post!

So I smoked like half the joint didn't even get stoned, layed down on my bed and carried on watching a movie all calm no jumping up or anything (like most of you claim to be the cause) I was just laying down pillow back of my head so I could see the TV [5 mins later] it came on out of nowhere but I'd like to add another detail which I guess is the same as saying I got dizzy but the feeling just before the dizzyness was like a HOT rush in my head and then the blurring vision together with dizzyness and then I noticed the heart beating like mad...Luckily I was with someone and they were told me to breath in through my nose and out my mouth which worked! it slowly calmed me down and and I was ok....but then followed the shaking, I started shaking big time uncontrollable...But then after I turned to the side, relaxed it disappeared like nothin ever happen.

This was by far the scariest shit I've ever experienced after smoking (I've been smoking everyday for 5 years!) I would really like to understand what happend there, it feels as though a blood vessel is getting clogged or some shit like that, like someone mentioned the blood pressure dropping, whatever it is, it only lasts a short time.

I know I should have mentioned this at the start but I'm guessing it's unlikely this has anything to do with it seeing as none of you mentioned it... I had the flu/cold at the time (runny nose, a little coughing and a strange pressure feeling on the head when u bend over lol :-S). If someone has seen a doctor or actually knows what the fuck this is, please, please share your wisdom!