It can come on once you least anticipate it, like once you’re chatting with somebody at a celebration or once you’re about to enter a retailer. Other instances it may be triggered by hectic occasions like deadlines at work or fights with a liked one. You can’t catch your breath and also you’re trembling, your coronary heart is racing, you’re drained, lightheaded and you are feeling just like the worst goes to occur. Sound acquainted?