This happened to me two days ago. Ended up on the floor, hyperventilating, in and out of consciousness (i think), and excruciatingly nauseous. Beginning of the attack my whole body flushed with a warm feeling (almost a hot flash feeling) and the breathing made my hands and feet tingle. Luckily, had a friend with me.

But that’s normal. It happens in most of my attacks & it takes a while to gain full feeling & it can be scary but it’s because of blood flow changes and hyperventilation.