The effects of a stroke depend on which part of the brain is affected and how severe the damage is. A stroke may affect your ability to move, your ability to speak and understand speech, your memory and problem-solving abilities, your emotions, and your senses of touch, hearing, sight, smell, and taste. In some cases, a stroke can be fatal.
It's important to recognize the warning signs of stroke, because quick treatment can reduce the risk of brain injury and death. A stroke usually comes on suddenly, over a few minutes or hours. The warning signs of stroke include:
- sudden weakness, numbness, or tingling of the face, arm, or leg (often on only one side of the body)
- sudden confusion, trouble speaking, or trouble understanding speech
- sudden vision loss (often in one eye only) or double vision
- sudden trouble walking, dizziness, loss of balance or coordination, or falls
- sudden severe headache (often described as "the worst headache of my life") with no known cause