I have had a cough and blocked ears for 3 months now, 5 lots of anti biotics, and 5 different doctors, chest xray clear. It was a lot worse than I am at the moment, but every day I have to cough up gunk from the top of my throat, for about half an hour, after this I am Ok but do a lot of throat clearing. I have tried variously giving up alcohol, salt, coffee, dairy, gluten, for periods of time, but nothing has finally got rid of it. I also have an itchy anus, I have wormed myself to no avail.