Some low tech changes which might help: buy a new pillow, even clean but older pillows a can have a mite population, the gas from their dung is an irritant. Sleep with a slightly open window if the British weather allows!
Some years ago I went to the doc with chronic sinusitis. Based on my flying, recreational diving and El Greco facial shape he said 'probably not much you can do - long sinus passages' then offered a 7 day course of antibiotics to clear up a possible 'residual infection'. It's often the passages that are inflamed rather than the sinus chambers proper especially if you're born with them narrow.
I'd recommend exposure to a warm, sunny climate, it does work! If you ever have a layover in Finland, try a proper hot, dry + steam sauna - works wonders too.
Last edited by BAMRA wake up; 21st Feb 2008 at 19:54.