answer:@Mama_Cakes I don’t get that ill often, but when I do it’s a doozy. It almost always starts as you describe, first with a little sniffle, then runny nose, then stuffy. Just as I think it’s about to end, post nasal drip is sure to produce a sore throat. Meanwhile, the congestion seems to move down from my sinus area to the chest, and I get bronchitis. From personal experience and observation, I think it might be that the infection that causes the sinusitis in the first place gradually moves down the throat, carried post-nasally. I might be wrong!