What causes an itchy throat and dry cough?
Generally, the term "throat" refers to the pharynx. Pharyngeal itching and dry cough may be caused by dry air, dietary irritation, chronic pharyngitis, bronchitis, upper airway cough syndrome, or other reasons. If discomfort occurs, timely medical consultation is recommended. Detailed explanations are as follows:

1. Dry Air
Excessively dry air may cause dryness of the pharyngeal mucosa, leading to symptoms such as pharyngeal itching and dry cough. It is advisable to maintain indoor air humidity by using a humidifier and to drink plenty of water to ensure adequate hydration.
2. Dietary Irritation
Consumption of spicy, greasy, or irritating foods may stimulate the pharyngeal mucosa with chemical substances, causing itching and dry cough. A light diet is recommended, avoiding excessive intake of spicy and greasy foods.
3. Chronic Pharyngitis
Chronic pharyngitis may be caused by recurrent acute pharyngitis, chronic inflammation of the upper respiratory tract, excessive smoking or alcohol consumption, and other factors. The pharyngeal mucosa may become congested and swollen, with increased secretions, leading to symptoms such as pharyngeal itching and dry cough, possibly accompanied by sensations of burning or dryness. Treatment may include medications such as Pudilan Anti-inflammatory Oral Liquid, Cetylpyridinium Iodide Lozenges, and Amoxicillin Capsules, under a doctor's guidance.
4. Bronchitis
Bronchitis may be caused by infections such as viruses, bacteria, or mycoplasma, or by irritants such as cold air and smoke. Inflammatory stimulation may lead to congestion, swelling, and increased secretions in the bronchial mucosa, irritating the throat and causing symptoms like pharyngeal itching and dry cough, often accompanied by sputum production and wheezing. Patients may follow medical advice to use medications such as Cefradine Capsules, Compound Licorice Tablets, and Ambroxol Hydrochloride Oral Solution.
5. Upper Airway Cough Syndrome
Upper airway cough syndrome occurs when nasal secretions flow backward into the nasopharynx, irritating the pharyngeal mucosa. The pharyngeal mucosa may become congested and swollen, leading to symptoms such as pharyngeal itching and dry cough, often accompanied by nasal congestion and runny nose. Patients may use medications such as Cetirizine Hydrochloride Tablets, Mometasone Furoate Nasal Spray, and Sodium Cromoglycate Nasal Drops, as advised by a doctor.
Maintaining a healthy diet, avoiding spicy, greasy, and irritating foods, and consuming more fresh fruits and vegetables can enhance the throat's resistance.