10 Early Warning Signs of a Stroke Everyone Should Know to Take Prompt Action

A stroke happens when blood flow to part of the brain is blocked or when a blood vessel in the brain bursts. Because brain cells can become damaged quickly, recognizing warning signs and getting emergency care immediately can make a major difference.

1. Sudden Face Drooping

One side of the face may feel weak or numb.
A smile may look uneven or one-sided.

2. Sudden Arm or Leg Weakness

Weakness, heaviness, or numbness—especially on one side of the body—can be a warning sign.

3. Trouble Speaking or Understanding Speech

Speech may become slurred.
A person may have difficulty finding words or understanding others.

4. Sudden Confusion

New confusion, disorientation, or difficulty following a conversation can occur.

5. Sudden Trouble Walking

Loss of balance, dizziness, coordination problems, or difficulty walking may appear.

6. Sudden Vision Changes

Blurred vision, double vision, or loss of vision in one or both eyes can be a stroke symptom.

7. Sudden Severe Headache

A sudden, intense headache—especially one unlike previous headaches—may be a warning sign, particularly if accompanied by other symptoms.

8. Sudden Numbness or Tingling

Unexpected numbness or loss of sensation in the face, arm, or leg should be taken seriously.

9. Difficulty Swallowing

Stroke can affect the muscles needed for safe swallowing.

10. Sudden Loss of Coordination

Trouble controlling movements or performing normal tasks may occur.

Remember FAST

F — Face: Ask the person to smile. Does one side droop?
A — Arms: Ask them to raise both arms. Does one drift downward?
S — Speech: Ask them to repeat a simple sentence. Is speech unclear?
T — Time: Call emergency services immediately if any sign appears.

What to Do If You Suspect a Stroke

Call emergency services right away.
Note the time symptoms started (or the last time the person was known to be well).
Do not give food, drinks, or medications unless advised by medical professionals.
Do not wait to see if symptoms improve.

Some strokes are treatable with time-sensitive treatments, and quick action can improve the chances of recovery. Even if symptoms disappear after a few minutes (a possible transient ischemic attack, or TIA), urgent medical evaluation is still important because it can be a warning sign of a future stroke.