I have respiratory symptoms as well, many of which have worsened this year. What did they say when you took your son to the pulmonologist?
I have a tenderness in my neck, just above my clavicle, that is so sensitive touching it causes me to cough. I'm also short of breath, dizzy, and I cough often, though I have no mucous, and I'm not asthmatic. I think it's bizarre, it doesn't seem natural to have these issues.