I might be wrong don't think I've ever had a panic attack. Panic sounds more incapacitating and alarming, like when you can't really think or react, just run like a scared cat.

As for anxiety, I get cold hands, my "insides" feel uneasy, my lungs feel heavy (but I hardly ever hyperventilate). I cough a lot and my feel like throwing up. I may get a discomfort around my chest. I will feel awful, I won't want to talk to anyone, but as someone said I can work my way, even in order not to show other what's happening.

Hoooweeever, I do have depersonalizations when my anxietys hits its maximum level, if I get way too sad and, when I get bad news and so. Maybe that's how I panic or why I don't panic? I don't know. When I was at school there was a girl who had panic attacks and I remember seeing her being taken by the hand to the medical care, having trouble to even walk, while she couldn't stop crying and hyperventilating. That never happened to me.