Treatment Methods for Long-term Chronic Cough

Long-term chronic dry cough without phlegm, coughing intermittently for 4 to 5 years. Always feel a scratchy throat, prone to coughing in air-conditioned rooms, dusty environments, or after eating very sweet food. Lately, cough has become more severe, especially at night, with a scratchy throat and pain when swallowing saliva. Sometimes there is phlegm, which is white in color. Drinking hot water can slightly alleviate the cough.
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