I'm 40 years old. Since 2 years I have been suffering from phlegm, cough, shortness of breath while walking briskly and climbing steps. I took 2d echo scan also it is normal. I went to pulmonologist he prescribed medrol (steroid) for three months. When I was using medrol I had no shortness of breath while walking briskly and climbing steps, cough and phlegm. But, after the course is over I developed those symptoms again. Steroids should not be used for longer period. Please suggest solution for my problem. Will it be cured or I have to suffer life long. Sometimes I don't get sleep properly suddenly I wake up as if my breathing is getting stopped and I feel rapid heart beat. All thees are happening when I developed breathing problem since 2 years. Please suggest me sir.