This complaint shows itself by a discharge from both nostrils. The causes are diseased teeth, protracted catarrh, causing chronic inflammation of the lining membrane of the nose, polypi, or inflammation of the sinuses of the nose, due to the presence of foreign matter in that organ. Where the disease is due to decayed teeth, the latter should be extracted; or to polypi, these should be removed. The nostrils should be syringed night and morning with a saturated solution of boracic acid; or the tincture of hydrastis is often useful - 1 part of tincture to equal parts of water. Exercise and fresh air are very necessary to recovery.