Patients with high cholesterol may not have any symptoms and may develop symptoms when associated complications, such as atherosclerotic disease, which leads to ischemia and hypoxia in the target organs, occur. Patients with high cholesterol may have corresponding signs, including xanthogranuloma, corneal rings, etc. For patients with high cholesterol, damage to target organs is often caused, such as heart damage resulting in coronary artery disease, which can result in states such as angina pectoris, myocardial infarction, heart failure, etc. Common symptoms are chest pain, palpitations, abnormal shortness of breath, etc. For the corresponding complications of cerebrovascular, including ischemic stroke, hemorrhagic stroke, etc., the common symptoms are dizziness, headache, hemiparesis, aphasia, etc. For common complications of the lower extremities, atherosclerotic occlusive disease of the lower extremities, the common symptom is intermittent claudication of the lower extremities.