I am having a mucus with black stuff. Gone ti chest clinic done my PFT, Chest x-ray, skull x-ray and they said it was sinus used the medicines no results and next went to the ENT he also said me I have sinus still it did nt cleared the problem. My weight was normal everything was fine but there was a continuous cold and black mucus. Problem was started before 5 months with cough and after 3 months black mucus started. Please can any one let me know the treatment for this. There was no headache all the tests PFT, CHEST is clear doctors said this is sinus. Please any one let me know the treatment. From 5 months I am suffering with this. Thanks in advance.