Hello sir/mam, I am 33 years old, m not married yet. I hv asthma, though I inhale med duonase nasal spray n foracort 200, still I get a lot of wet cough normally, n from a year when I eject cough from within lungs while coughing it comes out in greyish color n my nails are getting slight lines of black color also. sometimes I feel palpitations. Wat I may b suffering from n wat further treatment I shld take.