The carotid artery is a very important main artery, which can constantly deliver fresh blood to the brain, and plays a vital role in the health of the whole organism. However, now a variety of carotid artery disease, which makes people have to pay attention to, carotid artery stenosis is extremely common one, many patients are suffering from it. Carotid artery stenosis is one of the most common, and many patients are suffering from it. How is carotid artery stenosis caused? In fact, most of the carotid artery stenosis is caused by atherosclerosis, atherosclerosis will make the patient’s carotid artery intima-media thickening, the accumulation of time will form plaques, plaques continue to increase, so that blocked to the carotid artery lumen, the patient’s cerebral blood supply caused by a great impact. Carotid artery stenosis will cause cerebral ischemia symptoms, mainly manifested as dizziness, headache, memory loss, consciousness, numbness and weakness of the limbs, speech disorders, blurred vision, visual field defects and so on. If the carotid artery is not controlled in time in the early stage, the plaque increases in size and becomes unstable, and even falls off, it will easily cause acute cerebral infarction, which will jeopardize the patient’s life. Carotid artery stenosis is not to be careless, patients should go to the regular hospital in time. Carotid artery stenosis to the hospital what department? Usually, the carotid artery stenosis is the neurology department in the hospital, but it depends on each hospital’s triage situation. In the clinic, carotid artery stenosis is divided into mild and severe, if it is mild carotid artery stenosis, can be taken in the neurology department of the conservative drug treatment, in order to control the growth of plaque, stabilize the condition. However, if the carotid artery stenosis has developed into moderate to severe, it is not possible to control it only by taking medication, and it is necessary to arrange for surgical treatment at the neurosurgery department in time according to the actual situation of the patient.