The two types of stroke are:

• Ischemic – These strokes account for 80-90 percent of all strokes. An ischemic stroke occurs when fatty deposits called plaque cause a blood vessel in or leading to the brain to become narrowed. A blood clot (thrombus) forms at the site of this narrowing. A blood clot may also form in another part of the body and then travel to the brain where it lodges in a blood vessel. This type of clot is called an embolus.  The image below provides an illustartion of a narrowed blood vessel due to a blood clot.