Some studies have shown that negative emotions such as anxiety, depression and anger can induce the body to release histamine and other substances that can cause metabolic reactions, increase the excitability of the vagus nerve and decrease the responsiveness of the sympathetic nerve, thus causing or aggravating asthma attacks. This is because negative emotions can cause the body’s immunity to decline, thus making it susceptible to viral attacks and causing respiratory infections that can trigger asthma. Therefore, experts say that asthma patients must maintain an optimistic attitude so as to effectively control the asthma condition. The differential diagnosis should be made with the following basic phases: Cough asthma: also known as cough variant asthma, is a specific type of asthma with chronic cough as the main or only clinical manifestation. At the onset of bronchial asthma, about 5% to 6% have a persistent cough as the main symptom, mostly occurring at night or in the early morning, often as an irritating cough, which is often misdiagnosed as bronchitis at this time. Allergic asthma: before the attack, there are aura symptoms such as sneezing, runny nose, cough, chest tightness, etc. If not treated in time, asthma may occur due to the aggravation of bronchial obstruction, and serious cases may be forced to take a sitting position or telescopic breathing, dry cough or cough a lot of white foamy sputum, or even cyanosis, etc. However, it can generally be relieved by itself or after treatment with self or wheezing drugs, etc. Some patients may have another attack after a few hours of relief, or even Some patients may have another attack after a few hours of remission, even leading to a persistent state of asthma. Seasonal allergic asthma is a chronic airway inflammation involving a variety of cells, especially mast cells, eosinophils, and T lymphocytes. In susceptible individuals, this inflammation can cause recurrent episodes of wheezing, shortness of breath, chest tightness, and/or coughing, mostly at night and/or in the early morning, with increased airway responsiveness to multiple irritants. However, symptoms may resolve spontaneously or with treatment.