Asthma exacerbation at 4~5pm may be related to exposure to allergens, emotions and other factors. 1. Exposure to allergens: If you are often exposed to allergens such as oil smoke, paint odor, pollen, etc. in the afternoon, or consume allergy-prone foods such as seafood, etc., it may also cause asthma to worsen. 2. Emotional factors: If the spirit in the afternoon 4 ~ 5 pm in an agitated, nervous state, can also lead to an acute attack or aggravation of asthma. It is recommended that asthma patients usually do a good job of keeping warm, actively prevent colds, keep a happy mood, avoid eating cold and spicy food; symptoms should be treated as soon as possible to avoid serious consequences for the body.