Mr. Chen has been suffering from diabetes for more than 10 years and has been taking medication to control his blood sugar. However, at the beginning of this year, he started to experience frequent vertigo, weakness in his limbs and unstable walking. Later, he underwent a whole-brain arteriogram, and it was discovered that Mr. Chen’s left carotid artery had developed a large area of stenosis, which was the cause of his discomfort. Macroangiopathy, microangiopathy and neuropathy are the three most common chronic complications of diabetic patients, and Mr. Chen’s case belongs to macroangiopathy. 80% to 90% of inpatients today have macroangiopathy, when the onset of the patient’s arteries will generally appear plaque, stenosis, or venous occlusion, sclerosis, inflammation, resulting in dizziness, myocardial ischemia, intermittent claudication and other symptoms. It should be reminded that carotid artery stenosis or plaque is very dangerous and can easily cause brain infarction if not unblocked in time, but artery stenosis can easily be mistaken for neurological disease. Patients with a history of diabetes for more than 5 years should undergo carotid ultrasound at least once a year, and once stenosis or plaque is detected in the carotid artery, stenting can be performed according to the condition, along with the use of plaque stabilizing drugs, statin lipid-lowering drugs and small doses of aspirin. Patients with hypertension should also pay attention to antihypertensive treatment. In daily life, diabetic patients should pay attention to lowering sugar while also quitting smoking, improving diet, controlling blood pressure, and having timely consultation and carotid ultrasound examination when abnormal symptoms such as dizziness, weakness, unsteady gait or claudication occur. Early symptoms of diabetes: Most people are familiar with the typical symptoms of diabetes “three more and one less”, but before these typical symptoms appear, there are some early signs that are often overlooked, thus delaying the early detection and treatment of diabetes. For example, frequent fatigue, fatigue, vision loss, tingling and numbness in the hands and feet, and male sexual dysfunction are all early signs of diabetes. But many patients do not notice these signals in the early stage, mainly because people do not pay enough attention to the dangers of diabetes, coupled with unscientific lifestyle and diet, resulting in diabetes ready to “sneak up” on us. Therefore, if you often feel tired, tired; vision loss; tingling, numbness in the hands and feet; and male sexual dysfunction and other such physical discomfort, or two of these symptoms, you may have diabetes.