What causes cough with phlegm and an itchy throat?

In general, cough with phlegm and itchy throat may be caused by improper diet, environmental irritation, colds, pharyngitis, bronchitis, or other reasons. If the above symptoms occur, it is recommended to seek medical treatment promptly. Specific analysis is as follows:

1. Improper Diet

Consuming excessive spicy, greasy, or irritating foods, or eating food that is too cold or too hot, may irritate the mucous membranes of the throat, causing local congestion and swelling, thereby triggering symptoms such as cough with phlegm and an itchy throat. It is important to adjust dietary habits and avoid irritating foods.

2. Environmental Irritation

Long-term exposure to dry, cold environments or irritating gases—such as smoke, dust, and pollen—can irritate the throat's mucous membranes, leading to cough with phlegm and an itchy throat. It is essential to improve living conditions and reduce exposure to irritants in daily life.

3. Cold

Colds are caused by viral or bacterial infections. When viruses or bacteria invade the throat, they cause mucosal congestion and swelling, resulting in the aforementioned symptoms, possibly accompanied by nasal congestion and runny nose. Treatment under a doctor’s guidance may include medications such as Lianhua Qingwen Capsules, Cefaclor Dispersible Tablets, and Compound Cold Ling Granules.

4. Pharyngitis

Pharyngitis can be caused by bacterial or viral infections. It leads to mucosal congestion, swelling, and increased secretions, causing cough with phlegm and an itchy throat. Additional symptoms may include sore throat and hoarseness. Patients should follow medical advice and use medications such as Azithromycin Dispersible Tablets, Pudilan Anti-inflammatory Oral Liquid, and Yinhuang Sublingual Dropping Pills.

5. Bronchitis

Bronchitis is an inflammation of the bronchial mucosa caused by infection with bacteria, viruses, or other microorganisms. It increases bronchial secretions, which can irritate the throat and lead to both cough with phlegm and an itchy throat. Symptoms may also include shortness of breath, wheezing, and chest pain. Treatment should follow medical guidance and may include medications such as Ambroxol Hydrochloride Injection, Dextromethorphan Hydrobromide Tablets, and Budesonide Inhalation Aerosol.

To prevent symptoms of cough, phlegm, and itchy throat, individuals should maintain a balanced diet and avoid irritating foods. Keep living environments clean and humidified, and minimize exposure to harmful gases.