<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have had a pulsating feeling in my left mid back for about a week and I get dizzy,light headed, short of breath, and my chest gets tight when I workout. I went to the doctor and they did a chest x ray and said I was fine and thought I had bronchitis but it hasn t gone away?  <response>: Welcome, after going through your problem my view that you might have asthma chronic bronchitis ankylosing spondylitis. For diagnosis please have the following tests done X-ray Torso lumber spine, cbc, esr, crp, HLAb27, and spirometer for lung volumes, have a CCT chest done. Meanwhile, take rest, take good nutritious diet, morning walk, aerobic exercisesif tolerable. Consult philologist and orthopaedician. 