What is a stroke?
A stroke is a serious condition where the blood supply to your brain slows down or stops. Because this decreases the oxygen supply to your brain, within minutes, brain cells start dying. The most common types of stroke are described below.
Medical experts estimate that about 80% of strokes are ischemic. This is the type of stroke that occurs when the arteries to your brain start narrowing or become entirely blocked. There are two types of ischemic strokes: Thrombotic and embolic.
A thrombotic stroke happens when a blood clot develops in one of the arteries involved in delivering blood to your brain. An embolic stroke occurs when a blood clot or other type of debris develops away from your brain, often in your heart, and eventually gets stuck in smaller brain arteries.
Hemorrhagic strokes occur when one of the blood vessels in your brain either starts leaking or ruptures entirely. These types of strokes are often linked to high blood pressure (hypertension) weakened blood vessel walls (aneurysms), or possibly blood-thinning medications.
Transient ischemic attack
Nicknamed a “mini-stroke,” a transient ischemic attack results in decreased blood flow to your brain. While a transient ischemic attack is a serious medical issue that can last for several minutes, the effects are only temporary — no permanent tissue damage. But a transient ischemic attack dramatically increases your risk of having a full-blown stroke.