Hello, hopefully I'll be able to help you out a bit with your question.
Typically anxiety can cause you to be dizzy and short of breath, however it does not usually cause these symptoms over long periods of time. So if you are dizzy and short of breath constantly throughout the day, I would look for other causes, of which there are too many possibilities to mention without knowing many more specifics. If however, these symptoms are intermittent, at your age, anxiety is a distinct possibility.
I hope this helps, if not, please let me know, best of luck...
Please ask if you need clarification/more information.
POSITIVE feedback & a BONUS are greatly appreciated.
Please note that answers are for information only, do not take the place of an assessment by your doctor, and does not establish a patient-physician relationship