Cardiomyopathy may have no obvious symptoms in the early stage of the disease, or only manifest as weakness, etc.; with the progression of the disease, some of the typical manifestations of heart failure may appear, such as shortness of breath after activity, progressive dyspnea, telangiectasia, and edema of the lower limbs and eyelids. Cardiomyopathies are myocardial lesions caused by different etiologic factors (most commonly hereditary), which are organic and include abnormalities in the mechanical activity of the heart and/or electrocardiographic dysfunction. Early symptoms: Most patients have no obvious symptoms in the early stage, and heart enlargement is often detected only during physical examination, and some only show weakness and decreased exercise tolerance, which usually does not attract attention. Typical symptoms: the main manifestation of congestive heart failure, the most common is shortness of breath and edema. Shortness of breath is the main manifestation of left heart failure. At the beginning, shortness of breath occurs only after exertion, and activity tolerance decreases; as the disease progresses, shortness of breath also occurs during light physical activity or rest, and paroxysmal nocturnal dyspnea or telangiectasia occurs after the disease worsens. Cardiomyopathy is often accompanied by chest pain, palpitations, fatigue, dizziness, fainting, and can carry a risk of embolism and sudden death. Patients need to seek prompt medical attention and systematic treatment under medical supervision.