Public Health Agency of Canada
Symbol of the Government of Canada

Share this page

Signs and symptoms of a stroke

The signs and symptoms of a stroke are the same for both men and women. Symptoms can come on suddenly or can fluctuate over several days. Know the signs of a stroke and act quickly. Teach them to all family members, including children. The main warning signs and symptoms are:

  • Weakness. You may feel sudden weakness on one side of your body, numbness or tingling in your face, arm or leg.
  • Trouble speaking. You may temporarily have trouble speaking or understanding what others say.
  • Vision problems. You may suddenly lose your vision, especially in one eye, or you may have double vision.
  • Headache. You may have a sudden, severe and unusual headache.
  • Dizziness. You may suddenly lose your balance, especially if you are also showing any of the above signs.

If you or anyone you know is showing any of the warning signs, call 911 or your local emergency number as quickly as possible. You could help avoid a stroke.