Lifestyle

Sudden Face Drooping, Arm Weakness or Slurred Speech Can Mean a Stroke. Other Warning Signs That Call for 911

By Mike Harper · October 27, 2026

The warning signs of a stroke can look small at first: a face that is slightly uneven, an arm that will not lift properly, words that come out wrong. The person having one may not realize anything is happening.

A stroke occurs when blood flow to the brain is blocked or a blood vessel inside or on the surface of the brain bursts, according to the National Institute of Neurological Disorders and Stroke. The institute calls it a serious medical emergency. Nearly three-quarters of strokes occur in people over 65, it says, and the risk about doubles each decade after age 55.

The key to recognizing a stroke, NINDS says, is that symptoms appear suddenly. The Centers for Disease Control and Prevention and the American Stroke Association both teach the B.E. F.A.S.T. warning signs as a quick check.

Balance loss. A sudden loss of balance or coordination, trouble walking or dizziness. The CDC suggests asking the person whether they feel off balance or dizzy.

Eye changes. Sudden changes in vision. The stroke association lists blurred vision, double vision or loss of sight in one or both eyes.

Face drooping. Ask the person to smile. One side of the face may droop or feel numb, and the smile may look uneven.

Arm weakness. Ask the person to raise both arms. One arm may be weak or numb and drift downward.

Speech difficulty. Ask the person to repeat a simple sentence. Speech may be slurred, strange or hard to understand.

Time to call 911. If any of these signs appear, the CDC says to call 911 right away.

The CDC and NINDS list other sudden signs that also warrant a 911 call.

Numbness or weakness on one side. Sudden numbness or weakness of the face, arm or leg, especially on one side of the body.

Confusion. Sudden confusion, trouble speaking or difficulty understanding speech.

A severe headache. A sudden, severe headache with no known cause.

NINDS adds that, more rarely, people having a stroke may have disorientation or memory loss, drowsiness, double vision, nausea, dizziness or vomiting. The stroke association says women can also experience general weakness, confusion or memory problems, fatigue, nausea or vomiting, and that some signs in women can be subtle enough to be missed or brushed off.

Signs that fade still count. If symptoms go away after a few minutes, the CDC says it may have been a transient ischemic attack, or TIA, often called a mini-stroke. Because TIAs clear up, many people ignore them. The stroke association advises calling 911 even if symptoms go away, and NINDS says about one in three people who have a TIA will later have a stroke, most of them within a year.

What to do while waiting. The CDC advises noting the time when symptoms first appeared, since it helps doctors choose the best treatment. Do not drive to the hospital or let someone else drive. Calling 911 lets medical personnel begin treatment on the way.

Speed matters because the most effective treatments are time-limited. NINDS says the best stroke treatments can only be used within four and a half hours of the first symptoms, though some people benefit from treatment up to 24 hours after a stroke. Even people who wake up with symptoms should get to the hospital as soon as possible.

A person having a stroke may not recognize the problem, NINDS notes, and may be unable to call for help. That makes family members, friends and bystanders who know the signs especially important.

This article is for general information and is not medical advice. If you notice signs of a stroke in yourself or someone else, call 911 right away. This article was produced with the assistance of AI and fact-checked against the sources cited by LightWave Reports.