Symptoms of a stroke or transient ischemic attack (TIA) happen quickly. A stroke or TIA may cause:

• 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.

A stroke is an emergency and requires immediate medical attention.