Sinusitis causes sufferers a great deal of pain. Of the several discomforts, sinus headaches are known to be the most unrelenting. Sinus headaches are the result of tense pressure around the face and head caused by inflamed sinuses. Sinusitis is a viral infection of the sinuses – the cavities around the nasal passages. When the mucus membranes become inflamed and cause blockages, there is an intense build-up of pressure in the head. A sinus infection can develop from a number of conditions, such as seasonal allergies, a viral infection (for example, a cold), or anything that may interfere with the airflow and drainage of mucus within the sinuses.
Sinus headaches are caused by nasal congestion and the obstruction of airflow from excess mucus in the nasal passages. This results in a blockage and equalisation of air pressure, causing negative pressure. Sinus headaches are very common.