IGHE and Cough: Among the male patients with smoking as the risk factor, no significant difference was found in age, smoking index and history of chronic cough/expectoration between the group with elevated T-IgE (n = 75) and that with normal T-IgE (n = 67), but patients with increased serum T-lgE were more likely to wheeze, had a longer history of dyspnea and earlier onset of dyspnea on the background of chronic cough/expectoration history.