Frequent throat clearing is usually a foreign body sensation in the throat, feeling uncomfortable, clearing the throat can alleviate this discomfort. Commonly found in chronic pharyngitis, upper respiratory infections, lumps in the throat and other conditions, need to further improve the examination to clarify the cause. People with a foreign body sensation in the throat will often unconsciously clear the throat to relieve the discomfort of the throat. The cause of foreign body sensation may be one or more of the following conditions. 1. Chronic pharyngitis: common symptoms are foreign body sensation in the throat, easy nausea, dry heaving and so on. 2. Upper respiratory infections: such as colds, acute pharyngitis, tonsillitis, bronchitis during the nose secretions flow easily into the throat, will make people feel a foreign body sensation in the throat, in order to relieve this discomfort, usually unconsciously used to clear the throat of the way to relieve. 3. Swelling in the throat: If there are polyps or tumors in the throat, enlarged tonsils, etc., the patient will feel that breathing is not very smooth, clearing the throat can relieve the discomfort. If you want to avoid the move to clear the throat also need to find out the specific reasons, targeted treatment. Daily should also eat a light diet, so as not to induce the move to clear the throat more often.