DEAR DOCTOR K: I've had terrible allergies this year, and they have caused repeated, severe sinus headaches. What's the best way to treat sinus headaches?
DEAR READER: The sinuses are air-filled spaces above, between and beneath your eyes, flanking your nose. Both the nose and sinuses are lined with a thin membrane that swells and produces mucus in response to irritation. Normally, the mucus from the sinuses drains through small openings, known as ostia, into the nose. The stuff you blow out when your nose is congested is usually mucus produced by the membranes that are in your sinuses and in your nose.