When do you have shortness of breath? After walking,after some physical activity or without physical activity? Is it episodic and related to situations?.
If your shortness of breath is due to physical activity then we need to look into the medical causes like heart, lungs and kidneys. These are the three main organs that can result in shortness of breath. In the heart,if it is being compromised, fluid can accumulate in the lungs and can result in shortness of breath. Do you have any history of heart problem? Do you smoke? The other reason is lung diseases, like asthma
, obstructive lung diseases but again do you have symptoms other than shortness of breath? If your blood tests, ECG, kidney tests are normal then the shortness of breath is due to the symptoms of the anxiety
Keeping in view the history you have given, I think your lightheadedness
and shortness of breath are due to the effects of the anxiety and panic. Do you have feeling of pounding heart with it? What i suggest is that you try the deep breathing exercises. When you feel shortness of breath, sit at a chair, relax your body, take a deep breathe through the nose and exhale through the mouth. Remember you have to take deep breaths NOT fast and shallow breaths,rather DEEP and SLOW breaths. Do it for 5 mins and you will feel better.