You presentation are of symptoms of anxiety, but the autonomic Arousal is sudden or gradual should be ascertained, do you have severe anxiety  most ot he tumes in a day or only when there is event or sometimes ,should   have been clear to understand your condition better. Connect me on practo consult to do the needful.

Hello, Do these symptoms occur when you are stressed or otherwise as well?Since how long you are experiencing these symptoms? You need to check what triggers your anxiety? While trying some breathing and mindfulness exercises just focus on the exercises not the symptoms because your body is not in proper relaxation :while calming yourself down your mind anticipates these symptoms: that is the reason soon after relaxing symptoms reoccur with more intensity.So try deep breathing first focusing just on your breath and thn try some mindfulness exercises

Breathlessness, numbness, cold feat etc., shows that you are under some stress and something is bothering you.. Or, it could that, you aren't convinced a out certain people, or certain behaviour in few people, which might also be the reason for what you go through.