Heart problems are mainly seen in congenital heart diseases such as cardiovascular malformations and acquired heart diseases such as coronary atherosclerotic heart disease and viral myocarditis, etc. Patients may have symptoms such as shortness of breath, dyspnea, blackouts, dizziness, and weakness. 1. Congenital heart disease: such as atrial septal defect, ventricular septal defect, tetralogy of Fallot, etc., which can lead to clinical manifestations such as malaise, palpitation after exertion, exertional dyspnea, persistent bruising, and pestle-like fingers (toes) due to blood shunting. 2. Acquired heart disease: for example, coronary heart disease may cause chest pain, palpitation, dyspnea and fatigue after exertion due to myocardial ischemia; viral myocarditis may cause fever, arrhythmia and other clinical manifestations. 3. Heart failure: With the progress of the above heart diseases, when heart failure occurs, symptoms of left heart failure such as coughing pink foamy sputum, cyanosis of lips and mouth may appear, and/or symptoms of right heart failure such as body circulation stasis, decreased urine output, transtentorial vein angiosis, hepatomegaly, and so on. When the above symptoms occur, you should go to the hospital in time to find out the cause of the disease, so as not to lead to a delay in the condition, resulting in serious consequences.