Not really, at a rave they don't die unless it is in exceptional cases.
Every now and then dancing mania article pops out here or there and every time I'm reading it I wonder how much of it is exaggerated after telling and retelling this stories or even as a warning of sorts that such 'dirty', spontaneous rave may be deadly so should not be performed by a righteous christian (considering that it happened mainly in Europe between 7th and 17th century)
So basically a medieval version of Footloose? "Dancing is the work of the devil. It will bring great evils upon our town and our people!"
But sometimes if the party is really good you puke.