Daily Natural Remedies Natural Lifestyle Tips. 10 Natural Remedies for a Sinus Infection. A sinus infection may often be mistaken for a bad cold but is a common health problem. In fact, sinusitis is an inflammation and congestion of the nasal passages. The condition may be triggered by a number of causes such as airborne allergens, dietary irritants, common pollutants, viruses, polyps, or even the overuse of nasal products in some cases.
1 Inflammation, such as from pressure on the bursa or from inflammatory conditions. This is the most common cause of olecranon bursitis.  A sudden injury, such as a blow to the elbow, causing bleeding or fluid buildup.
1 Pericardial effusion is a collection of fluid in the pericardial sac. This fluid may be produced by inflammation.  The cause of pericarditis in most individuals is unknown but is likely due to viral infection. Pericarditis may be an associated complication of many diseases or may be due to trauma.