Why do eyes tear with a cold?
The common cold is a viral infection that affects the respiratory system, and it’s characterized by symptoms such as a runny nose, sneezing, coughing, and sometimes a sore throat. One of the lesser-known symptoms of a cold is watery eyes, which can be quite uncomfortable and confusing for those experiencing it for the first time. But why do eyes tear with a cold? Let’s delve into the science behind this phenomenon.
When you catch a cold, the virus attacks the lining of your nose and throat, causing inflammation and irritation. This inflammation leads to the production of excess mucus, which is the body’s way of trying to clear out the virus and other irritants. The mucus is then secreted through the nasal passages and down the back of the throat, where it can trigger coughing and sneezing.
The same inflammation that causes the production of mucus can also affect the tear ducts. The tear ducts are small tubes that carry tears from the eyes to the nose. When the tear ducts become inflamed, they may not function properly, leading to a buildup of tears in the eyes. This excess tear production is the body’s attempt to flush out any irritants or allergens that may have entered the eyes.
Another reason why eyes may tear with a cold is due to the release of histamines. Histamines are chemicals that the body produces in response to an allergen or irritant. They cause a variety of symptoms, including watery eyes, sneezing, and runny nose. When the cold virus attacks the body, it can trigger an immune response that releases histamines, leading to these symptoms.
It’s important to note that while watery eyes are a common symptom of a cold, they can also be a sign of other conditions, such as allergies or conjunctivitis. Allergies can cause similar symptoms, including watery eyes, sneezing, and a runny nose, as the body’s immune system reacts to allergens like pollen or pet dander.
In conclusion, eyes tearing with a cold is a result of the body’s response to the viral infection. The inflammation and excess mucus production can affect the tear ducts, leading to watery eyes. Additionally, the release of histamines in response to the virus can also contribute to this symptom. While it may be uncomfortable, understanding the underlying causes can help alleviate concerns and provide relief for those dealing with a cold.
