Heart Palpitations: Causes and When to Get Checked

What a Heart Palpitation Actually Is

A heart palpitation is a short-lived, noticeable change in how your heartbeat feels — like it's racing, pounding, fluttering, flip-flopping, skipping a beat, or adding an extra one. You can feel this in your chest, but also in your neck or throat. Normally your heart just does its job without you being aware of it; a palpitation is the sudden, often startling, awareness of your own heartbeat. Episodes are usually brief, lasting a few seconds to a few minutes, though they can occasionally last longer.

Anyone can get palpitations, but they're more common in women, and they can show up at different points in life — as a teenager, during pregnancy, or during menopause. According to Cleveland Clinic, one study found that 16% of people had seen their primary care provider specifically because of palpitations, and they're one of the most common reasons people see a cardiologist at all.

What Commonly Causes Palpitations

The large majority of palpitations trace back to an ordinary, identifiable trigger rather than a heart condition. The most frequent one, by far, is anxiety — strong emotions like stress, fear, and panic trigger a surge of adrenaline that speeds up the heart, which is exactly why palpitations are common during a panic attack even in someone with a completely healthy heart.

Other, less common triggers include fever, anemia, low blood sugar or oxygen, blood loss, recreational drug use, and alcohol. Spicy or rich foods, and caffeinated or alcoholic drinks, are also a frequent cause of palpitations after eating.

It's worth noting that in a meaningful share of cases, no clear cause is ever pinned down, and that's not itself a red flag. Sometimes the palpitations come from what's technically called a premature atrial or ventricular contraction — essentially a single early or extra heartbeat that most people have some of throughout the day without ever noticing. These become noticeable specifically when things are quiet: lying in bed, sitting still, or right after a meal, which is exactly why so many people first notice palpitations at night rather than during a busy day.

Palpitations at Night vs. During the Day

Nighttime palpitations feel just like daytime ones, but people often notice them more once they're lying still and undistracted — there's nothing else competing for their attention. Sleeping on one side, especially the left, can also increase pressure in a way that makes palpitations more noticeable. If palpitations happen consistently every time you lie down or seem to occur all day without ever settling, that pattern is worth mentioning to a doctor even without other symptoms, simply because it's less typical of the usual stress-or-stimulant trigger.

Palpitations after eating are their own common pattern, usually tied to spicy or rich meals, caffeine, or alcohol rather than anything happening with digestion itself pressing on the heart. Reducing or spacing out those triggers is often enough to reduce how often they happen.

The Signs That Mean It's Time to See a Doctor

Occasional palpitations with no other symptoms and a normal heart rate are rarely a cause for concern, and often resolve on their own once the underlying trigger — stress, caffeine, dehydration — is addressed. What changes the picture is a specific combination: palpitations that come with dizziness, confusion, lightheadedness, chest pain or pressure, shortness of breath, unusual sweating, or that start happening more often or more intensely than before.

For palpitations that happen sometimes but aren't accompanied by those additional symptoms, it's still worth contacting your regular provider, especially if you have known heart disease, significant risk factors for heart disease, an abnormal heart valve, or an electrolyte imbalance — all of which make it somewhat more likely that palpitations reflect an actual rhythm issue rather than a benign trigger.

How Doctors Actually Diagnose the Cause

A provider will typically start with your medical history, symptoms, diet, and any medications or supplements you're taking, along with details about when the palpitations happen, how long they last, what you're doing when they start, and what helps. Since palpitations often aren't happening during the actual appointment, a doctor may ask you to tap out the rhythm you felt with your fingers to get a sense of the pattern.

Treatment, when needed at all, depends entirely on the underlying cause. If anxiety or stress is driving the palpitations, calming techniques like deep breathing, yoga, or mindfulness exercises are often the first thing tried, along with cutting back on caffeine. If an actual abnormal heart rhythm is identified, treatment can range from medication to a procedure or device depending on what type of arrhythmia it is.

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