Seasonal bronchitis is mainly divided into 2 types. The first is allergic bronchitis, because it is for a certain season, for example, spring blooming is allergic to flowers, and in the fall, when the leaves are dry and yellow, together with the wind will be allergic to this kind of most of the seasonal episodes. In addition to allergic, there is another kind of chronic bronchitis, which develops in the fall and winter seasons, especially among the elderly, because of their poor health condition, Qi deficiency and Yang Qi insufficiency, so they will have bronchitis attacks in the winter. The symptoms that appear in these two types of bronchitis are mainly coughing, coughing up phlegm, and even wheezing. Elderly people often combine infections in fall and winter episodes, while allergic bronchitis tends to have episodes in spring and fall, and rarely combines infections, but if you are continuously exposed to allergens, even if you don’t have infections, the wheezing symptoms can be more serious, and you should be careful as well.