There are many causes of paroxysmal dyspnea, such as pneumonia, bronchitis, and acute upper respiratory tract infection, which can trigger paroxysmal dyspnea in patients, and clinically, doctors need to combine relevant tests to determine this, such as chest CT, ECG, and allergen tests are necessary. In addition to respiratory system causing dyspnea, there are also cardiac causes, such as angina pectoris and pericarditis, which can induce dyspnea. Medication can be chosen under the guidance of a doctor, like nitroglycerin, compound salvia drops, and even diuretics like furosemide and hydrochlorothiazide can be applied with the treatment, which is helpful in correcting heart failure and can improve dyspnea.