Should i be concerned with a new side effect of carotid artery disease? i have been suffering from carotid artery disease, however recently i started seeing black spots. i know that this is a side effect, but should i be concerned of this sudden appearanc

This : This is a very serious symptom, and should prompt immediate medical attention. These black spots in your vision may be a result of fragments of the carotid artery plaque breaking free and traveling up to the brain or eye. This heralds carotid plaque instability and the potential for a stroke, which occurs when a ruptured fragment of the atherosclerotic plaque blocks a brain artery. People with carotid artery disease who have symptoms should not only be on certain medications, but they should also be evaluated for surgery or carotid artery stenting.

Yes: Yes, you should be concerned as you may have an ulcerated plaque or an irrregular lining to your carotid vessels that supply the brain. If a piece breaks off and goes through your neck into your ophthalmic artery the blood supply to your eye it could be causing these black spots. I would see medical consultation immediately. Your body could be warning you that a stroke is coming.