So I've had a pretty bad cough from allergies to the pollen l day, and I was playing my video game later that night when I started to feel a sharp pain in my throat right after I had a little coughing fit, and the more I'd try to talk, the less I could and the more it hurt to. Then when I started to Google it, I got really light headed, tunnel vision, and passed out. The next thing I remember was that I woke up on the floor. The best bet I thought was that I agitated my throat from coughing.