The other day while I was working, (I'm a lifeguard), an elder man went down our waterslide, and he came out in a seizure-like state, convulsing, and arms perpendicular to his body. After a few seconds of being rescued and pulled to the side with head being supported, he stopped, shook off a bit and got out of the pool without assistance and was instantly fine. He had no other symptoms of a seizure, and I've seen this before, but not this intensity. So basically, my question is, how do I determine the difference between a seizure and this, in case further treatment/care is necessary. Not necessarily at work, but in my personal life if I encountered a situation like this for whatever reason. Thanks!