What causes a runny nose

A runny nose can be caused by various factors. One of the most common reasons is the body's natural response to allergies, such as to dust, pollen, or other irritants. Other common causes include infections, such as colds or the flu, and even hormonal changes. When you have a runny nose, it's usually a sign that your body is trying to clear out the irritants or pathogens that have caused the inflammation in your nasal passages. The body produces extra mucus to help flush out these substances, which often results in a runny nose. In some cases, a runny nose can also be a symptom of a more serious condition, such as sinusitis or nasal polyps. If your runny nose persists or is accompanied by other symptoms such as fever or severe nasal congestion, it's important to consult a doctor to rule out any serious conditions. It's also worth noting that weather changes, air quality, and other environmental factors can contribute to runny noses. To help alleviate the symptoms, you can try using saline nose drops or sprays, drinking plenty of water, and avoiding exposure to allergens or irritants. If the problem persists, it's recommended to see a healthcare professional for a proper diagnosis and treatment.