I would like to know what are the side effects of an occluded carotid artery. I have a carotid artery that is totally occluded. None of my doctors seem to know what side effects I may experience. However, I feel that is some of the cause for the deterioration of my spine, as well as, the loss of circulation that I feel in my legs. And many times, I feel as if I have no energy, but if I do things like take a walk, I become extremely tired. Is this just a coincidence or a side effect?