I've been coughing for such a long time, but all my tests are coming back normal. The AFB test was negative, and even the X-rays look fine. Why am I still coughing so much? What could be causing this? I'm starting to get really worried.
Probable diagnosis is asthma,Copd,allergies,bronchitis,pneumonia ,GERD,sinusitis,etc tobacco use etc .Patient is advised for CT chest, complete blood count ,esr and C-reactive protein tests.