伤风,也叫感冒,医学上叫急性鼻炎。这是一种最常见的疾病,传染性较强,在季节变换的时候容易感染,尤其是身体虚弱的人、老年人或是小孩,更容易发生。它发病的原因,多半是在抵抗力降低的情况下,由于外来的细菌或者滤过性病毒侵入鼻粘膜,或是原来在上呼吸道的细菌,趁机活动而发病的。伤风既然是由于传染发生的,那么为什么有些人从来不伤风,而又有些人就非常容易伤风呢?这是因为每个人的体质和抵抗力有强有弱的关系。我们人在日常生活里,天天都在与发生疾病的因素作斗争,如果抵 Cold, also known as cold, medicine called acute rhinitis. This is one of the most common diseases, contagious, and prone to infection during seasonal shifts, especially for frail, elderly or children. The reason for its onset, mostly in the case of reduced immunity, due to foreign bacteria or viral invasion of the nasal mucosa, or bacteria in the upper respiratory tract, took the opportunity to take the initiative and disease. Since colds are contagious, why do some people never attack colds, while others are more prone to colds? This is because everyone has a weak and weak constitution and resistance. In our daily life, we all struggle with the elements of the disease if they arrive