What causes excessive nasal mucus?

Excessive nasal mucus (boogers) may be caused by various factors, mainly including the following: 1. **Environmental factors**: Dry or cold air can cause the nasal mucosa to become dry, thereby increasing the production of nasal mucus. In addition, pollutants and allergens in the air may also irritate the nasal passages, leading to increased mucus production. 2. **Physiological factors**: The amount of nasal secretion varies from person to person. Some individuals may naturally produce more nasal mucus due to genetic or hormonal factors. 3. **Lifestyle habits**: Unhealthy lifestyle habits such as smoking, alcohol consumption, and prolonged use of air conditioning or heating systems may cause nasal dryness, thereby increasing the formation of nasal mucus. 4. **Infections and inflammation**: Inflammatory conditions such as rhinitis, sinusitis, and upper respiratory tract infections can lead to increased nasal secretions, resulting in more nasal mucus. If symptoms persist or worsen, it is recommended to seek medical attention promptly.