I've dealt with anxiety for 20 years and the one thing I've noticed over that time is my symptoms will change over time. From back and chest tightness, to headaches, to palpations, to numbness in the extremities, to kaleidoscope vision, to pressure in the eyes and head, to profuse sweating and hyperventilation. 

It seems to know the perfect way to keep me uncomfortable all the time. 

Luckily it's cyclical for me so I only deal with it maybe a month or so a year, but it always manages to keep me off guard, so that it's almost impossible to manage when it does attack.

Does anyone else have similar issues?