He is 9 years old & years ago (pre school age) he used to suffer with his tonsils, but this seemed to clear up before he started school. However, he has had a thick snotty dnose on & off ever since. He has had it all this winter & it seems to mainly come out of one nostril. He had antibiotics just after Christmas for something else, which I would have thought may have cleared it up if it was an infection.
He hates having to constantly blow his nose, but it never seems to clear up. Any ideas why this is happening?