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Table 3 Diagnosis criteria for postinfectious cough

From: Efficacy and safety of Qing-Feng-Gan-Ke Granules in patients with postinfectious cough: study protocol of a novel-design phase III placebo-controlled, double-blind randomized trial

Cough that has been present following symptoms of an upper respiratory tract infection;

Irritable dry cough or cough with small amounts of white mucus;

Cough lasts for at least 3 weeks, but normally no longer than 8 weeks;

Negative findings of chest radiograph;

Negative results of bronchial provocation test and dilation test;

Exclude other causes which could result in cough, such as upper airway cough syndrome(UACS), cough variant asthma(CVA), eosinophilic bronchitis(EB) and gastroesohageal reflux disease(GERC);

Exclude severe pulmonary diseases including chronic obstructive pulmonary disease(COPD),lung cancer, pulmonary tuberculosis, et al.;

Exclude hypertension that involves use of angiotensin converting enzyme inhibitor(ACEI) currently.