Changing seasons in autumn and winter is easy to catch a cold. What should I do?

It is easy to catch a cold in the south/autumn and winter seasons, which may be caused by low immunity or environmental factors, as follows:

1. Low immunity

During the season change, the temperature difference is large, because of low immunity, the body's adjustment ability is poor, so it can't adapt to the greater climate change, thus increasing the chance of catching a cold.

2. Environmental factors

Secondly, during the season change, not only the temperature changes, but also allergens increase, such as pollen and rattan grass. Some patients with allergic rhinitis may also have symptoms similar to colds such as nasal congestion.