困扰2.5亿中国人的竟然是花……阿嚏！过敏性鼻炎这份tips请收好
Spring is bursting out all over … achoo!

Every spring, when the pollen concentration rises, the nose and throat departments of hospitals will be packed. Incidence of the allergic diseases has been growing in China in recent years. Incidence of allergic rhinitis, which used to be widespread in some developed Western countries only, also began to prevail in China. 每年春天，花粉浓度上升时，医院的鼻咽喉科就会挤满了人。近年来，我国过敏性疾病的发病率呈上升趋势。过敏性鼻炎以前只在一些西方发达国家普遍流行，现在其发病率在我国也开始升高。

In Beijing, for example, the most common allergenic pollens in spring include those from the large-fruited elm tree, Cathay poplar, ash, acacia and white birch.以北京为例，春季最常见的致敏花粉包括榆树、杨树、白蜡、合欢树和白桦的花粉。

As the economy develops, more Chinese will have the disease. In less-developed countries, children contact bacteria and viruses in the environment more often, which promotes their immune system, so they are less likely to experience allergies when they grow up.随着我国经济社会的进步，过敏人群还会增加。在欠发达地区，人们在儿童时期更频繁接触环境中的细菌和病毒，促进了免疫系统的发育，因此成年时过敏的几率就会降低。

When the pollen concentration is high, patients should reduce their outdoor activities and wear face masks and goggles when they go out. It’s helpful to take immunity-modulating drugs in advance before symptoms appear, and continue to use medicines based on a doctor’s guidance until the pollen season passes.花粉浓度高时，患者应减少户外活动，外出时应戴口罩和护目镜。在症状出现之前提前服用免疫调节药物是有帮助的，在花粉季节过去之前，在医生的指导下继续用药。

It is still a global challenge because the pathogenesis is unclear and current treatments cannot delay progression of the disease. In addition, most allergens are closely linked to human living environments and are impossible to simply wipe out. And most treatment methods can only control symptoms.过敏性疾病在全球仍然是一个难以攻克的难题，因为它的发病机制尚不清楚，目前的治疗方法不能延缓疾病的进展。此外，大多数过敏原与人类生活环境密切相关，不可能简单地根除。而大多数治疗方法只能控制症状。