the simplistic answer is the the panic attack is the furthest extension of the anxiety. when the anxiety is really bad it forces the autonomic systems of the body (automatic. breathing heart rate blood pressure adrenaline release etc. ) to react in the extreme and you can move into a panic attack. it can happen very quickly and be totally disabling even acting exactly like a heart attack make you think wildly change normal behavior to bizarre want to run hide hurt yourself and more. panic attacks are not anything to ignore. if you are prone to them you should always have a fast acting med with you such as xanax. take it move to a quiet calm place and regain composure. they are frightening and terrifying. best of luck.
whats the difference between anxiety and panic attacks