有的幼儿一年四季流着鼻涕,这是一种病态。因为健康的鼻孔只会有极少量的白色粘鼻涕。经常性流鼻涕往往是由于患伤风感冒,鼻炎、鼻窦炎或肿瘤等疾病而引起的。鼻涕多会引起鼻腔堵塞,就不得不改用嘴巴呼吸,天长日久就容易得 Some young children runny nose throughout the year, this is a pathological. Because healthy nostrils will only have a very small amount of white sticky nose. Regular runny nose is often caused by cold and flu, rhinitis, sinusitis or cancer and other diseases. Nose will cause nasal congestion, it would have to switch to mouth breathing, eternal easy to get