What’s that sudden flutter in your chest? That’s an ectopic heartbeat: Here’s what to know

An ectopic heartbeat is an extra or early heartbeat that pops up before your regular heart rhythm has finished its beat. That weird sensation you sometimes feel like your heart skipped a beat or made a little hiccup? That’s probably an ectopic beat.

Doctors also call these “extra systoles” or “premature contractions.” These can come from the heart’s upper chambers (called premature atrial contractions or PACs) or from the lower chambers (premature ventricular contractions or PVCs).

What causes ectopic heartbeats?

There are lots of perfectly normal triggers for ectopic beats. Common reasons include:

• Caffeine (yep, that extra cup of coffee!)
• Alcohol
• Stress or anxiety
• Tobacco or other stimulants
• Exercise
• Certain medicines or recreational drugs

Rarely, they could be linked to changes in blood minerals (like low potassium), heart enlargement, or structural issues with the heart, but for most people including kids and healthy adults, these beats happen now and then for no serious reason.

What do they feel like?

Ectopic beats can feel different for everyone, and honestly, they can catch you off guard. Some people describe them as a flutter in the chest, like your heart’s doing a little flip. Others feel a strong thump, a skipped beat, or even a weird pause that makes you stop and take a breath. It might feel like your heart is racing or pounding for no reason, and sometimes there’s a quick dizzy spell or a strange “catch” in your chest. For a lot of people, it only lasts a second just long enough to notice, then everything goes back to normal.

And some folks don’t feel anything at all; their heart just does its thing without causing any fuss. It can be a bit unsettling if you’re not used to it, but most of the time, it’s harmless. Still, if it happens often or feels off, it’s worth getting it checked out.

Are ectopic heartbeats life-threatening?

In most cases, ectopic heartbeats are not dangerous. They’re super common and almost always harmless, especially if you’re otherwise healthy. They won’t damage your heart or mean that you have a serious heart condition.

However, this is nothing to worry about. "I often tell my patients that the fact they feel these beats is usually a sign that their heart is healthy. A weak, sick heart can't exert a forceful beat," explains cardiologist Alfred E. Buxton, professor of medicine at Harvard Medical School.

But, like with most things in medicine, there are some exceptions. If you have:

• A known heart condition (especially structural issues or weakness in the heart muscle)
• Frequent or persistent ectopic beats
• Symptoms like chest pain, fainting, or shortness of breath

…it’s worth checking with a doctor, just in case. Rarely, frequent ectopic beats (especially from the ventricles or PVCs) can be linked to more serious arrhythmias in people with underlying heart disease. In even rarer cases, they can lead to or signal a risk for more dangerous rhythms like ventricular tachycardia or ventricular fibrillation, but this is almost never the case in healthy people.

When should you call the doctor?

You should definitely get checked out if you:

Feel faint/actually faint
Have chest pain
Get very short of breath
Notice your symptoms are getting worse or not going away with simple lifestyle measures

These could be signs of something more serious and are worth a closer look. For almost everyone else, though, ectopic beats are harmless.

Disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. If you experience frequent or concerning heart symptoms, consult a qualified healthcare provider. Always seek medical attention for chest pain, fainting, or shortness of breath.