What is the most common type of stroke?

The most common type of stroke is ischemic stroke, which accounts for approximately 87% of all strokes. Ischemic strokes occur due to an obstruction in a blood vessel supplying blood to the brain. This blockage is often caused by a thrombus (a blood clot that forms in the artery) or an embolus (a clot that travels from another part of the body and lodges in a cerebral artery).

The significance of this type of stroke lies in its cause and treatment options; early intervention with thrombolytics, which dissolve the clot, can significantly improve outcomes. Recognizing ischemic stroke is critical for timely treatment, making the awareness of its prevalence essential for clinical practice.

In contrast, while hemorrhagic strokes and transient ischemic attacks (TIAs) are important to recognize, they are less common. Hemorrhagic strokes result from bleeding in or around the brain, and TIAs, often called mini-strokes, are temporary blockages that resolve quickly and don't cause lasting damage. Cryptogenic strokes, which have no identifiable cause, are also less frequent. Understanding the prevalence and characteristics of ischemic strokes helps healthcare professionals prioritize assessment and care for patients presenting with stroke symptoms.