Natural Home Remedies for Sinus Headache Relief Sinuses are a kind of cavities or pockets in the facial bones of the skull. Sinuses actually humidify and filter the air thus increasing the strength, activity and stability of the skull. When there any inflammation and pressure exerted in the sinuses, it definitely results in the sinus headache. There is never being a dangerous point in the sinuses case and it never causes any serious or life-threatening condition. Only few of the people suffer from these headaches at some point in their lives. The best way to treat the sinus headaches is to diagnose that what is causing them. Causes of a Sinus Headache There are the tissues present inside the sinuses that get inflamed that results in the headache, this is a primary cause and is known to be as sinusitis. When there is a problem with mucous membranes that it do not produce proper mucus, pressure occurs which lead to the headache so it is the secondary cause. Following