Postnasal Drip
By Russell J. Otto, MD, FACS, Denton LIVING WELL Magazine
Postnasal drip is a condition that can be a normal occurrence or reflect a variety of abnormal conditions. The membranes that line the nose and sinuses produce a mildly sticky, watery liquid called mucus. The mucus normally circulates from the sinuses and nose into the throat and is swallowed. One to two quarts of mucus can be produced in a day. When the composition and volume of mucus are just right, the process is not noticed. However, if the mucus is too thick or too thin, or if there is too much or too little of it, it becomes noticed as postnasal drip.
The causes of postnasal drip are many and varied. Upper respiratory infection, sinus infection, and seasonal nasal allergy are some of the most common causes. The excessive mucus created can be felt draining into the throat. Abnormal nasal anatomy such as a deviated nasal septum could cause altered airflow and increased membrane irritation with excess mucus produced. Sensitivity to cold air or dry air, smoke, cleaning chemicals, perfumes and candles can lead to postnasal drip. Foods like dairy products or spicy foods can elicit a reaction in the nose resulting in excess mucus draining into the throat. Other conditions such as gastroesophageal reflux can cause irritation in the throat leading to postnasal drip. In a child, drainage, and typically foul odor, from one side of the nose, is a warning for a possible foreign body lodged somewhere in the nose. Tumors and swallowing disorders can affect the presence and removal of mucus. Certain medications taken for other medical problems can affect the mucus. Postnasal drip can cause other problems. Chronic sore throat, cough, and halitosis (bad breath) are but a few of these.
Finding and treating the root cause of postnasal drip is the most effective treatment. A thorough medical evaluation can help identify a cause. Sometimes medications, allergy testing, radiologic testing, and surgery may be needed. Various treatments for postnasal drip are aimed at addressing the composition and volume of mucus. Saline irrigation and guaifenesin are helpful for the purpose as is drinking enough water daily.
Dr. Otto may be reached at 940-891-6100.
