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SIGNS OF BLOCKED CAROTID ARTERY 

TRANSIENT ISCHEMIC ATTACK 

A transient ischemic attack (TIA), often referred to as a "mini-stroke", is usually the first sign of a blocked carotid artery. A TIA can last from a few minutes to an hour, according to information provided by the National Heart Lung and Blood Institute. TIAs are similar to strokes except that the symptoms of a TIA often subside on their own without medical intervention. 
The classic symptom of a TIA is weakness, numbness or tingling on one side of the body. The patient may also experience the inability to control the movements of his limbs. Vision impairments that many describe as a window shade being pulled down over the eye are also frequent. Speech and the ability to understand others may also be impaired. Patients having a TIA may also have a sudden and severe headache and dizziness.
Although the symptoms of a TIA usually resolve in 24 hours, they should not be ignored. A TIA is a warning sign of the possibility of a stroke.