I have phlegm in my throat, constantly. I need to clear my throat (through voluntary coughing) every few minutes. If I don't do that, the phlegm dries in place and I end up with a restricted airway and difficulty breathing. I can't really sing because my voice will catch on the phlegm.
If you know of anyone with this symptom, or who is familiar with this symptom, please let me know.
So far I've seen an allergist, an ENT, and a gastroenterologist, and the response from each has been "that's not my problem, see someone else". (The ENT did at least stick a camera through my nose and photograph phlegm stuck to the sides of my throat, which gives me a response to the people who say "what if you're just imagining it?")