Heart palpitations feel like your heart is pounding, fluttering, racing, or skipping beats. You might notice the sensation in your chest, neck, or throat. They’re extremely common: roughly 90 out of 100 people report experiencing palpitations over any given few-month period. Most episodes are harmless and resolve on their own, but the sensation can be startling, especially if you’ve never noticed it before.
The Four Main Sensations
People describe palpitations in several distinct ways, and you may experience more than one type at different times.
- Fluttering: A flapping or fluttery feeling in the chest, sometimes described as the heart “flipping over.” This is one of the most commonly reported sensations and often comes from a single extra beat followed by a brief pause.
- Skipping or irregular beats: It feels like your heart pauses for a second, then catches up with a stronger-than-normal thump. You may notice the rhythm speeding up and slowing down unpredictably.
- Pounding: Your heart beats forcefully enough that you can feel it in your chest, ears, or the side of your neck. The beats themselves may be at a normal rate but feel unusually strong.
- Racing: A sudden sense that your heart rate has jumped well above normal, sometimes to 150 beats per minute or higher, even while you’re sitting still.
Some people feel palpitations for just a beat or two. Others notice episodes lasting several seconds or even minutes. The sensation is often more noticeable when you’re lying down at night, because there’s less competing sensory input and your chest is pressed against the mattress.
Anxiety-Related Palpitations
Stress and anxiety are among the most frequent triggers. When your body’s fight-or-flight response kicks in, adrenaline surges and your heart rate climbs. You may feel a sudden pounding or racing in your chest, neck, or throat. These episodes tend to start abruptly when stress spikes and fade quickly, usually within a few minutes, once the stressful moment passes.
One useful pattern to watch: anxiety-driven palpitations are typically short-lived and tied to an identifiable trigger like a tense conversation, a looming deadline, or a panic attack. If your palpitations happen frequently without an obvious emotional trigger, or if they don’t resolve within a few minutes, the cause is less likely to be anxiety alone.
How Different Rhythms Feel Different
Not all palpitations come from the same type of heart rhythm, and the way an episode starts and stops can tell you a lot about what’s behind it.
The most common culprit is a premature beat, either from the upper or lower chambers of the heart. You feel a brief “skip” or flutter, sometimes followed by one strong thump as the heart resets. These isolated extra beats are almost always harmless.
A gradually building heart rate that speeds up over seconds to minutes and then slowly comes back down typically reflects sinus tachycardia, which is your heart’s normal pacemaker simply running faster. Exercise, caffeine, dehydration, fever, and anxiety all cause this. It feels like a steady, predictable acceleration rather than an abrupt switch.
By contrast, certain abnormal fast rhythms originating above the lower chambers start and stop within seconds, like flipping a light switch. One moment your heart is beating normally, and the next it’s racing at a fixed, very fast rate. It may cut off just as suddenly. That on-off quality is a hallmark worth mentioning to your doctor, because it points toward a specific category of rhythm disturbance that can be treated effectively.
Common Triggers
Beyond anxiety, several everyday factors can bring on palpitations. Caffeine and alcohol are well-known triggers, especially in larger amounts. Decongestants and some asthma inhalers stimulate the heart in a similar way. Hormonal shifts during menstruation, pregnancy, or menopause can increase palpitation frequency. Even a large meal or a sudden change in body position (like standing up quickly) can set off a noticeable flutter.
Poor sleep and dehydration lower the threshold for extra beats. Many people notice that palpitations cluster during periods when they’re sleeping less, drinking more coffee, or under unusual stress. Addressing those basics often reduces episodes significantly without any medical intervention.
When Palpitations Signal Something Serious
Most palpitations are benign, but a few accompanying symptoms change the picture. Losing consciousness or nearly fainting during an episode warrants an immediate trip to the emergency department. The same applies if palpitations come with dizziness, lightheadedness, or chest pain. These combinations can indicate a rhythm disturbance that affects how much blood the heart is pumping.
Palpitations that last many minutes, happen with increasing frequency over days or weeks, or occur during physical exertion rather than at rest also deserve medical attention. A strong family history of sudden cardiac events or a personal history of heart disease lowers the bar for when to get checked out.
How Palpitations Are Evaluated
The challenge with diagnosing palpitations is that they often come and go unpredictably. A standard electrocardiogram records about 10 seconds of heart rhythm, so it frequently misses intermittent episodes.
If the initial recording is normal, the next step is usually a portable monitor you wear at home. A Holter monitor records continuously for one to two days and is useful when palpitations happen at least once daily. If your episodes are less frequent, an event recorder is a better fit. You wear it for up to 30 days and press a button when symptoms occur, capturing the rhythm at the exact moment you feel it. That real-time snapshot is often the most valuable piece of diagnostic information, because it links what you feel to what the heart is actually doing electrically.
Blood work to check thyroid function, electrolyte levels, and red blood cell counts is also standard, since imbalances in any of these can trigger or worsen palpitations.