A stroke occurs when a blood vessel to the brain bursts or is blocked by a blood clot. Within minutes, the nerve cells in that part of the brain die. As a result, the part of the body controlled by those cells cannot work properly.
The effects of a stroke may range from mild to severe. They may get better, or they may last the rest of your life. A stroke can affect vision, speech, behavior, thought processes, and your ability to move.
It can cause symptoms that may include:
- Sudden numbness, tingling, weakness, or loss of movement in your face, arm, or leg, especially on only one side of your body.
- Sudden vision changes.
- Sudden trouble speaking.
- Sudden confusion or trouble understanding simple statements.
- Sudden problems with walking or balance.
- A sudden, severe headache that is different from past headaches.