Blood clots. A blood vessel may be blocked by an embolus. This is the tiny mass of debris that moves throughout the bloodstream. Or it may be blocked by a thrombus. It is a blood clot. Carotid artery disorder: A blockage or narrowing inside the arteries giving your brain. This may https://www.sgvascularctr.com/a-comprehensive-approach-to-lymphoedema-treatment-a-vascular-surgeons-perspective/