呼吸道是人体中负责空气进出和气体交换的重要通道，由鼻腔、咽喉和气管等部分组成。呼吸道疾病的种类繁多，主要包括感冒咳嗽气喘、哮喘、肺炎、慢性阻塞性肺病（COPD）等。这些疾病不仅会影响呼吸道的正常功能，还可能对全身的健康造成影响。以下是一些常见的呼吸道疾病及其主要症状：

1. 感冒咳嗽气喘：感冒咳嗽气喘是由病毒感染引起的常见呼吸道疾病，通常表现为咳嗽气喘、咳嗽气喘气喘气喘、咳嗽气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气喘气