I've had nasal mucous as long as I can remember (I'm 68) and this gets to my chest every Autumn and can last for months. Damp weather always makes it worse, also if I get hot indoors. Could all this be caused by the nasal mucous? Antihistamines don't seem to work so I wonder if certain food intolerance or lack of vitamins or minerals might be the problem.
Any ideas or suggestions would be appreciated.