I sometimes have these moments where I will suddenly get a rush of adrenaline. After it sets in, I start to cry. Then I began to feel as if I can't move or I am stuck in one place. My crying gets worse and I start shaking followed by rapid breathing. The more it sets in the worse my shaking gets. I start to almost in the sense, hyperventilate. I sometimes scream if it gets worse, or feel the need to. Sometimes it may just be a high pitched crying noise. I may even get a slight stutter, almost like when you're cold and your teeth chatter, but it's when someone speaks to me. I've had these occur 3 times in my life. I just had my third one and I'm very concerned. I don't know if it's bad anxiety or something else. If you have any information, please tell me what you think it could be.