Postnasal drip occurs when excess mucus flows down the back of your throat. Glands in the nose and throat produce mucus daily to moisten nasal passages, trap irritants, and fight infections, usually swallowed unnoticed. However, when mucus becomes excessive or thicker, it becomes noticeable and can lead to discomfort. This article explores the reasons behind postnasal drip and its association with COVID-19.
What Causes Postnasal Drip
Postnasal drip is a common symptom stemming from a variety of factors. Allergies are a frequent cause, as seasonal or environmental triggers irritate nasal passages, prompting increased mucus production. Viral infections, such as the common cold and flu, also commonly lead to postnasal drip as the body produces more mucus to combat illness.
Sinus infections, or sinusitis, involve inflammation within the hollow spaces behind the eyes, forehead, and cheeks, contributing to excess mucus. Changes in weather, particularly cold temperatures or dry air, can also stimulate more mucus to moisten the nasal lining. Additionally, certain medications, including some birth control pills and high blood pressure drugs, as well as acid reflux, can contribute to postnasal drip.
Postnasal Drip in COVID-19 Cases
While postnasal drip is not consistently listed among the most prominent symptoms of COVID-19, it can occur as part of broader respiratory manifestations. When present, postnasal drip often appears alongside other characteristic indicators of the infection. The SARS-CoV-2 virus, which causes COVID-19, can lead to inflammation in the nasal passages, resulting in a runny or stuffy nose that may contribute to postnasal drip.
A blocked or runny nose is a recognized symptom of COVID-19, and this congestion can lead to the sensation of mucus draining down the throat. Other common symptoms accompanying postnasal drip in COVID-19 include fever, a new continuous cough, fatigue, and muscle aches. A sore throat and changes or loss of taste or smell are also commonly reported, distinguishing COVID-19 from conditions like seasonal allergies. The presence of postnasal drip alone does not confirm a COVID-19 diagnosis, but its occurrence with these other symptoms warrants further consideration.
When to Seek Guidance
If you are experiencing postnasal drip, especially if accompanied by other symptoms commonly associated with COVID-19, considering testing is a prudent step. The Centers for Disease Control and Prevention (CDC) advises immediate testing if you develop any COVID-19 symptoms. If symptoms are present but an initial at-home test is negative, repeat the test after 48 hours. If exposed to someone with confirmed COVID-19 but not symptomatic, wait at least five full days after exposure before testing to ensure accuracy.
Consulting a healthcare professional is advisable if symptoms are severe, persistent, or worsening. This includes situations where postnasal drip does not improve after 10 days of at-home care, or if accompanied by a high fever, wheezing, or foul-smelling mucus. For comfort, self-care measures like staying well-hydrated to thin mucus, using a saline nasal spray, and gargling with salt water can help manage symptoms. Humidifiers can also add moisture to the air, which may help ease discomfort.