Types of Stroke

What are the Different Types of Stroke?

Types of stroke

Image Source: CDC.gov


There are two main types of strokes:

  • 87 percent are ischemic strokes -- strokes caused by blockage of an artery (major blood vessel)
  • 13 percent are hemorrhagic strokes -- strokes caused by bleeding into the brain

Another type of stroke is called a transient ischemic attack, and is considered a ‘mini-stroke’, or warning stroke. The blood flow is usually only blocked for a short period of time (generally 5 minutes or less.) A transient ischemic attack is still a serious event and all strokes should be taken seriously and treated immediately.

If you or someone with you may be having a stroke, call 911 immediately.

Learn more about the most advanced stroke treatments and stroke prevention techniques provided by specialists at the OHSU Stroke Center.

Make an Appointment

Your primary care provider must refer you to the OHSU Stroke Center. If you have questions about a clinic visit, call 503 494-7772

Or have your doctor call our consultation line to make a referral 800 245-6478


OHSU Stroke Center
Oregon Health & Science University
3181 SW Sam Jackson Park Road
Portland, OR 97239-3098
Hatfield Research Center, 13th floor

Stroke Care Pathway

This document outlines the steps that may be taken at the hospital after you or a loved one has suffered a stroke.


Stroke Risk Assessment Test

This test will estimate your stroke risk in comparison to others in your age group. 

Take the test