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What are the main manifestations of chronic bronchitis?
Chronic bronchitis mainly has the following symptoms: 1, cough: mostly in seasonal alternation or winter, with white or yellow sputum; 2, expectoration: the amount of sputum suddenly increased compared with before, from white to yellow, and cough can also be aggravated;

3, wheezing: the symptoms of wheezing are related to acute attacks, some patients wheezing occurs at night, especially serious patients, can wake up.