Stroke vs heart attack: How to spot the difference (when every second counts)

When it comes to medical emergencies, few conditions demand faster action than a stroke or heart attack. But how can you tell the difference? While both are serious, life-threatening events caused by disrupted blood flow, they affect different organs and require different responses.

Understanding the distinction between these two conditions could help save a life—including your own.

What's the difference between a stroke and a heart attack?

Many people get confused about the difference between a stroke and a heart attack. But in essence, both involve blocked blood flow, known as circulatory emergencies. The simplest way to understand the difference is to think about location.

• A heart attack occurs when blood flow to the heart is blocked, typically by a clot or buildup in the coronary arteries. Without an adequate blood supply, the heart muscle begins to die.
• A stroke, sometimes called a "brain attack," happens when blood flow to the brain is interrupted or when a blood vessel in the brain bursts. Without oxygen, brain cells start to die within minutes. 

While both are circulatory emergencies, they require different treatments and have different warning signs. The sooner either condition is treated, the better the outcome—which is why recognizing the symptoms is so important.

Recognizing a heart attack: The warning signs

Heart attack symptoms can vary widely from person to person. Some people experience sudden, intense symptoms, while others have mild warning signs that build over hours, days or even weeks. The most common symptoms include:

• Chest discomfort (often described as pressure, squeezing or fullness)
• Pain that spreads to the shoulders, neck, jaw or arms
• Shortness of breath
• Cold sweats
• Nausea
• Lightheadedness

Heart attack symptoms in women

Women often experience heart attacks differently than men. While chest pain remains the most common symptom for everyone, women are more likely to have subtler signs:

• Unusual fatigue
• Sleep disturbances
• Indigestion
• Anxiety
• Shortness of breath
• Back or jaw pain 

Because these don't match the "classic" heart attack symptoms many people expect, women sometimes delay seeking treatment—a delay that can be dangerous.

Recognizing a stroke: The warning signs

Stroke symptoms typically come on suddenly and affect how you move, speak or perceive the world around you. The most common warning signs include:

• Sudden numbness or weakness in the face, arm or leg (especially on one side of the body)
• Confusion or difficulty speaking
• Trouble seeing in one or both eyes
• Difficulty walking
• Dizziness
• Loss of balance
• A severe headache with no known cause

Remember to BE FAST

The BE FAST acronym is an easy way to remember the most common stroke symptoms and what to do:

B - Balance: Are you or your loved one having trouble walking or experiencing dizziness?

E - Eyes: Is there a loss of vision or double vision?

F - Face drooping: Does one side of the face droop or feel numb? Ask the person to smile. Is the smile uneven?

A - Arm weakness: Is one arm weak or numb? Ask the person to raise both arms. Does one arm drift downward?

S - Speech difficulty: Is speech slurred or hard to understand? Ask the person to repeat a simple sentence.

T - Time to call 911: If you observe any of these signs, call 911 immediately. Note the time symptoms started.

What about cardiac arrest, and how is this different?

You may also hear about cardiac arrest, which is different from both stroke and heart attack. While a heart attack is a "plumbing problem,” involving a blocked artery, cardiac arrest is an "electrical problem,” where the heart's electrical system malfunctions, causing the heart to suddenly stop beating. 

A person in cardiac arrest collapses, becomes unresponsive and stops breathing normally. Without immediate CPR and defibrillation, cardiac arrest is fatal within minutes.

A heart attack can sometimes trigger cardiac arrest, but it’s important to note that they are not the same condition. During most heart attacks, the heart continues to beat.

Reducing your risk for both stroke and heart attack

The good news is that many risk factors for both stroke and heart attack are within your control and can significantly reduce your risk:

• Managing high blood pressure and cholesterol
• Maintaining a healthy weight
• Staying physically active
• Eating a heart-healthy diet
• Not smoking
• Limiting alcohol
• Managing chronic conditions like diabetes

Regular check-ups with your doctor can help you understand your personal risk factors and create a plan to address them before an emergency occurs.

When in doubt, if it is a stroke vs. heart attack, call 911

For both stroke and heart attack, time is critical. During a heart attack, the longer the blockage remains, the more heart muscle is damaged. During a stroke, brain cells are lost at an alarming rate.

That's why calling 911 at the first sign of symptoms is so important. Emergency medical services can begin treatment on the way to the hospital, and the emergency team can be prepared for your arrival. Don't drive yourself or wait to see if symptoms improve—immediate action can reduce damage and save your life.

If you or someone around you experiences symptoms of a stroke or heart attack, don't wait. Even if you're not certain what's happening, it's always better to err on the side of caution. Emergency responders would rather evaluate you and find that it's not a serious event than see you wait too long to get help.

For more information, reach out to your doctor. Knowing the warning signs and acting quickly could make all the difference for you or someone you love.