Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier
WebMD

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine
WebMD

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion
    WebMD

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community
    WebMD

    Community

    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Stroke Health Center

Select An Article
Font Size
A
A
A

Cause

Causes of ischemic stroke

An ischemic stroke is caused by a blood clot that blocks blood flow to the brain.

Low blood pressure may also cause an ischemic stroke, although this is less common. Low blood pressure results in reduced blood flow to the brain. It may be caused by narrowed or diseased arteries, a heart attack, a large loss of blood, or a severe infection.

Recommended Related to Stroke

After a Stroke: Medications to Reduce Arm Spasticity

When it comes to stroke rehabilitation, one medication doesn’t fit all. Your stroke rehab team will work with you to find out which medications, if any, can improve stiffness after a stroke. It's important to remember these medications are not a cure. They are ongoing treatments that relieve the symptoms of spasticity. "There are no medications that have been well proven -- in large, well-designed clinical trials -- to directly help with motor rehabilitation beyond their effect on spasticity," says...

Read the After a Stroke: Medications to Reduce Arm Spasticity article > >

Some surgeries (such as endarterectomy) or other procedures (such as carotid artery stenting) that are used to treat narrowed carotid arteries may cause a blood clot to break loose, resulting in a stroke.

Causes of hemorrhagic stroke

A hemorrhagic stroke is caused by bleeding in or around the brain.

  • Bleeding inside the brain itself (intracerebral hemorrhage, or ICH) may be a result of long-term high blood pressure.
  • Bleeding in the space around the brain (subarachnoid hemorrhage, or SAH) may be caused by a ruptured aneurysm or uncontrolled high blood pressure.

Other less common causes include head or neck injuries, certain diseases, and radiation treatment for cancer in the neck or brain.

WebMD Medical Reference from Healthwise

Last Updated: September 09, 2014
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
Next Article:

Today on WebMD

brain illustration stroke
Know these 5 signs.
brain scans
Test your stroke smarts.
 
woman with migraine
Is there a link?
brain scan
Get the facts.
 
brain scans
Quiz
woman with migraine
Article
 
brain scan
Article
headache
Video
 
senior man stretching pre workout
Article
Floor level view of therapist helping stroke patie
Article
 
concerned woman
Article
Lowering Cholesterol Slideshow
SLIDESHOW