I have a really hard time breathing? well, i am 17 years old and ever since i was in the fourth grade, i've had trouble breathing. i went to the doctors multiple times and they have all told me that it was anxiety, but i do not believe that to be my diagn

The : The standard evaluation of breathing discomfort, either acute or chronic includes history, physical exam, labs, and radiographs. Chest tightness suggests bronchospasm; rapid, shallow breathing patterns may be compatible with interstitial lung disease, particularly if chronic. A sense of heavy breathing may bespeak deconditioning. An occupational history could go for hypersensitivity pneumonitis. Breathing difficulties after 50 ft exertion suggest a cardiovascular etiology; asthma is more likely precipitated after only more intense activity. Diagnostic evaluations including spirometry and oximetry could help differentiate a possible cause. Radiographs could point to heart disease, obstructive lung disease, or interstitial lung disease. I would advocate this standard evaluation.

Having trouble : Breathing can be caused by anxiety. You were right to consult a physician to make sure that there was nothing wrong physically. As you have done so many times over, it looks like this is caused by a psychological issue. If you don't feel anxious, there may be something else going on and it would be worthwhile exploring that with a good psychotherapist.