Something irritating or inflaming the nasal tissue of the nose is what causes it to become runny. To a stop a runny nose, a person will either need to stop what is irritating or inflaming their nose or take medications that will help reduce the inflammation and production of mucus. Show A runny nose is the body’s way of getting rid of any germs that might be irritating or inflaming it. The nose produces clear mucus, which can turn yellow or green after a few days. In medical literature, professionals call a runny nose rhinorrhea. A person may have a runny nose because they are allergic to something, due to a viral or bacterial infection, or as a result of of environmental factors such as temperature. Below, we take a look at some of the common causes of a runny nose. According to the Asthma and Allergy Foundation of America (AAFA), allergies occur because a person’s immune system reacts to a particular substance, or allergen. Some common allergens include pollen, animal dander, and dust. This reaction can cause several symptoms to develop, including a runny nose, sneezing, itchy eyes, a scratchy throat, or coughing. According to the National Institutes of Health (NIH), the typical treatment options for allergies include using:
Antihistamines work by blocking the receptors in a person’s body that cause inflammation. According to an article in the journal Advances in Dermatology and Allergology, a person can take second-generation antihistamines up to four times above the recommended dose if the recommended dose does not help after a period of time. According to the AAFA, decongestants work by reducing the swelling in the nose that is causing the congestion. Nasal steroids also reduce swelling in a person’s nose, but they do so using a different mechanism. According to the Centers for Disease Control and Prevention (CDC), many viruses can cause the common cold, though the most common is rhinovirus. A cold can cause a person to have a runny nose. Other symptoms of a cold can include:
Colds are usually worse during the second or third day and can last for as long as 2 weeks in some cases. Colds do not require any treatment. According to the CDC, a cold will get better on its own. To help themselves feel better, however, a person should “rest and drink plenty of fluids.” Share on PinterestSinusitis shares some symptoms with the common cold.Sinusitis is an infection of the sinuses. Sinusitis occurs when fluids cannot leave a person’s sinuses, which allows germs to develop. The cause is usually a virus, but occasionally, it can be a bacterial infection. According to some experts, most people who have a cold will also have infected sinuses. As well as a runny nose, sinusitis has other symptoms similar to those of a cold. A medical professional can determine whether a person’s sinusitis is due to a bacterial infection or a virus. If it is due to a bacterial infection, they may prescribe antibiotics. If a person’s sinusitis occurs because of a virus, resting at home should be enough to treat the infection. Runny nose is preventable by either resolving the underlying cause or taking medications to reduce the symptoms. For example, if someone has a runny nose because they are allergic to cats, avoiding cats, taking antihistamines, or both should prevent a runny nose from developing in the future. Alternatively, if their runny nose happens because of a cold, resting until their immune system has fought off the infection should get rid of the symptoms. The outlook for a runny nose depends on the underlying cause. However, once a person has determined the cause, there are usually straightforward steps they can take, including resting, staying hydrated, or taking antihistamines, to make their nose stop running. If these steps do not work, it may be necessary to speak to a medical professional. When to see a doctorIf a person has gotten rid of the underlying causes of their runny nose but their nose is still running, they should speak to a doctor. It is common to have a runny nose. This symptom develops because of something irritating or inflaming a person’s nasal tissue. Once they have determined the cause, it is usually easy to treat a runny nose with self-care and by taking over-the-counter medications. What is rhinorrhea or runny nose? What causes rhinorrhea?
Why is rhinorrhea a concern? How do we evaluate rhinorrhea? How is rhinorrhea treated? What are the long-term effects of rhinorrhea?  Side view of the nasal cavity showing the bony structures inside the nose. Side view showing where adenoids lay in the back of the nose (nasopharynx). Adenoids are made of the same type of tissue, called lymphoid tissue, as the tonsils in the throat. This tissue can also be found in the back of the tongue, called lingual tonsil. Front view showing where adenoids are in the back of the nose, just above the mouth palate. The back of the nose drains into the back of the throat. This picture also demonstrates how these parts work together, in what is often called a “lymphatic ring”. Learn more about Pediatric Otolaryngology or call us at (650) 724-4800 for more information. What happens when your nose is runny?A runny or stuffy nose can be due to colds, allergies, sinus infections or the flu. When there is an excess of mucus secretions the nose is runny. The additional secretions drain from the front of the nose, or down the back (post-nasal drip).
Are you sick if you have a runny nose?Not necessarily. A runny nose can be a symptom of something that's contagious, like the common cold or COVID-19. But it could also have a non-contagious cause, like cold air, hormones, or allergies.
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What happens if you have a runny nose
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