Normally, when I'm going through a panic attack, I feel dizzy, can't breathe, have rapid heartbeat and blurry vision, I tremble and believe that I'm going to die, sweat, feel numb, am afraid of anyone touching or being very close to me and am choking. After all the panic has gone, I stop crying and then try to get my heart and breath back to normal. Because I take calming pills in order for these to happen I can barely keep my eyes open and so go to sleep. This time I had a very weird panic attack. First of all, it just happened for no reason at all. Secondly, even when the first one stopped, and I was trying to relax, I was afraid of everything and panicked again when my dog came to see what happened. Then everything started again and when i stopped, I just stood there lying for about 2 minutes and then ***HERE'S THE WEIRDEST PART*** started laughing uncontrollably for more than 15 minutes. I didn't know what the hell I was doing, I just couldn't stop. I have never laughed like this in my hole life. Then I started crying, then laughing and crying at the same time, the laughing again until my brother managed to calm me down. After that, I couldn't even speak or blink or move a finger. I was completely exhausted and felt like I don't even exist. I was just lost...Can someone please explain to me why this happened? Oh, and sorry for the long and tiring post :/