A sinus headache is a headache that occurs when your sinuses are congested. Sinuses are bony air-filled cavities in the head and face that connect with the nose through small openings. The sinus lining, normally produces mucus which drains through these small openings to the nose. If you have a cold or allergies, the openings of your sinuses may be blocked by excess mucus or a swelling of the tissue that lines the sinuses. When the sinus cavities are blocked, they may become infected and a headache occurs. Read more….
Sinus Headache Symptoms