What is symptom of blocked carodid artery?

Hello. Thank you for writing.

A carotid artery is usually considered nearly blocked when it's more than 80 percent blocked. At that point, you're at high risk for a transient ischemic attack (TIA) or a stroke. A TIA is also known as a ministroke because it causes stroke symptoms that last from a few minutes to a few hours.These symptoms include:

-sudden weakness or numbness in the face, arms, or legs (usually on one side of the body)
-trouble speaking (garbled speech) or understanding
-sudden vision problems in one or both eyes
-dizziness
-sudden, severe headache
-drooping on one side of your face

Helena