Early symptoms of carotid artery blockage occur when the patient feels dizziness, confusion, blurred vision, and ringing in the ears. Because the carotid artery mainly maintains the blood supply to the body’s brain tissue, when a blockage occurs on one side, the other side can compensate. However, some patients may have problems on the other side, such as narrowing of the arteries, so it is not enough to compensate for the blocked side of the carotid artery, and then the patient will experience ischemia and hypoxia in the brain tissue, and the symptoms mentioned above will occur. If the blocked plaque is dislodged, it will lead to cerebral infarction, and the patient will suffer from hemiplegia, aphasia, blurred vision, or even blindness, which also requires a thorough diagnosis and treatment in a hospital. If a blockage in the carotid artery is found, it is best to take a surgical procedure to open the blocked carotid artery.