What causes phlegm and a foreign body sensation at the connection between the nose and throat, and what should I do?

Generally, a sensation of phlegm and foreign body at the junction of the nose and throat may be caused by factors such as poor environment, improper diet, excessive voice use and fatigue, chronic rhinitis, and chronic pharyngitis. Treatment can be administered under the guidance of a physician, including general treatments and medication. Detailed analysis is as follows:

1. Poor Environment

When the surrounding environment has dry, polluted, or irritating air, the mucous membranes of the nasal cavity and throat can be adversely stimulated, prompting increased mucus secretion for self-protection. This mucus tends to accumulate at the junction of the nose and throat, causing a sensation of phlegm and foreign body. It is important to maintain fresh and humid indoor air; using air humidifiers to maintain humidity between 40%-60% is recommended. Avoid prolonged exposure to polluted environments, and wear a mask for protection when going outdoors.

2. Improper Diet

Consuming excessive spicy, greasy, overly sweet, or salty foods can affect the digestive function of the spleen and stomach, leading to abnormal metabolism of body fluids and the formation of phlegm. Additionally, the irritating odors from these foods or refluxed stomach acid may stimulate the mucous membranes at the junction of the nasal cavity and throat, increasing secretion and resulting in a sensation of phlegm and foreign body. Maintain a balanced diet, reduce intake of such irritant foods, and increase consumption of vegetables, fruits, and whole grains.

3. Excessive Voice Use and Fatigue

Extended periods of loud talking, singing, or continuous strenuous voice use, as well as physical overexertion, can cause tension in the throat muscles and poor local blood circulation. This leads to disordered secretion function of the mucous membranes at the junction of the nose and throat, resulting in increased secretions that do not drain properly, thus causing a sensation of phlegm and foreign body. It is recommended to schedule voice use appropriately, avoid prolonged continuous voice strain, balance work and rest, and ensure adequate rest.

4. Chronic Rhinitis

Chronic rhinitis often results from repeated episodes of acute rhinitis, nasal structural abnormalities, long-term inhalation of irritants, and other factors. The nasal mucosa remains in a state of chronic inflammation, with congestion, swelling, increased glandular secretion, and excessive mucus production. This mucus can flow backward to the junction of the nose and throat, irritating the local mucosa and causing a sensation of phlegm and foreign body. Nasal congestion and other symptoms may also occur. Treatment under a physician's guidance may include medications such as budesonide nasal spray, Bi Yan Kang (nasal inflammation reliever), and loratadine tablets.

5. Chronic Pharyngitis

Chronic pharyngitis is often caused by repeated episodes of acute pharyngitis, long-term smoking and alcohol consumption, and other factors. The mucous membranes of the throat remain in a state of chronic inflammation, with submucosal tissue hyperplasia and thickening, and increased sensitivity of nerve endings. When nasal secretions flow back to this area or when the throat's own inflammation causes irritation, a distinct sensation of phlegm and foreign body occurs. Symptoms such as nausea and dry heaving may also accompany. Follow medical advice for treatment with medications such as Jin Shuang Li Yan Pills, compound borax mouthwash, and omeprazole enteric-coated capsules.

In daily life, it is important to strengthen physical exercise, improve immune function, and prevent respiratory infections. Pay attention to nasal and oral hygiene, properly blow the nose without excessive force, brush teeth in the morning and evening, and rinse the mouth after meals.