I have seasonal allergies, so I haven't really done anything about them yet. However, considering how I feel right now, I am considering getting medical attention myself.The Docs didn't suggest anything (like claritan)? There is always going the shot route too. For chronic (as in year round) allergies, I think I'd look that way.
As it is, sometimes twice a year, I get so gummed up I wind up with bronchitis.
I was told at one particularly bad episode (as 'mag stated above) that "abusive throat clearing" was the reason I was having a hard time singing, not the presence of the phlegm itself.