The common symptoms of a carotid occlusion, or closing of an artery, include visual disturbances such as blurred vision or sudden blindness, as well as weakness, dizziness and mental confusion, according to WebMD. The blurred vision can happen in one or both of the patient's eyes.
Weakness accompanied by tingling or numbness on one side of the body is often present with a carotid occlusion, says WebMD. These sensations can be felt in the face, the side, or on one arm or one leg. The person may also be suddenly clumsy and experience dizziness and mental confusion. He may also lose the power of speech or have a headache that comes on suddenly and is severely painful. He may find it difficult to swallow and have memory problems.
These symptoms are signs of a stroke or a warning of a stroke called a transient ischemic attack, explains WebMD. TIAs happen when the carotid artery is briefly blocked by a blood clot, and though the symptoms are the same as a stroke, they clear up within a few minutes or hours and leave the person undamaged. However, a TIA is still a medical emergency, as there is no way for a layperson to know that he is not having a stroke. Moreover, people who experience TIAs are several times more likely to have a stroke than people who do not experience TIAs.