Diagnose this...

It MUST have all these conditions, they're all simultaneous and felt connected, not coincidental.

1) While sprinting back and forth on a basketball court at a tremendous speed, suddenly losing legs from beneath you.
2) Have absolutely no power in those legs, and they are icey cold.
3) Arms are almost the same, but have a little strength and allows the person to pull themselves (because they were certainly not going to get any help from onlookers) to the side of the court.
4) An immense chest pain, very intense.
5) Go fetal to provide the body with warmth, I believe moving the legs into a fold with the arms.
6) Complete loss of legs probably lasted about 15 minutes.
7) Was able to walk after that, but had to crouch at the knees and only walked because no one recognized there was a problem. Still hurt all over.
8) Probably started truly recovering after 45 minutes.

So it needs presumably a loss of blood circulation to the limbs making them feeling like they are utterly frozen. A chest pain (central, if recollection is correct) is also essential. They are not coincidental. It all occurred simultaneously. I can't tell you if this person had an erratic heartbeat, they don't remember (it was a long time ago).

__________________Rota - Viola Sonata #1 http://youtu.be/kVcXpXJpveE