Yes, pain can cause heart palpitations. When you experience pain, your nervous system triggers a stress response that releases adrenaline and other chemicals into your bloodstream, and these directly affect your heart rate and rhythm. The connection is well established, though the actual increase in heart rate from pain alone tends to be more modest than most people expect.
How Pain Triggers a Heart Response
Pain activates your sympathetic nervous system, the same system responsible for your fight-or-flight response. When this happens, your adrenal glands release catecholamines (primarily adrenaline and noradrenaline) into your bloodstream. These chemicals increase your heart rate, raise your blood pressure, and can change your heart’s electrical activity. The result is what you feel as palpitations: a pounding, fluttering, or racing sensation in your chest.
In severe cases, high levels of circulating catecholamines can overstimulate the heart’s nerve terminals enough to cause measurable changes on an EKG, including a faster-than-normal heart rate and alterations in electrical conduction. This is the same stress pathway involved in Takotsubo cardiomyopathy, sometimes called “broken heart syndrome,” where intense physical or emotional stress temporarily weakens the heart muscle.
The Heart Rate Increase May Be Smaller Than You Think
A large study published in Mayo Clinic Proceedings looked at over 10,600 emergency department visits and compared self-reported pain levels with measured heart rates. Patients who rated their pain as 1 out of 10 had an average heart rate of about 85 beats per minute. Those who rated their pain at 10 out of 10 averaged only about 88 beats per minute. That’s a difference of roughly 3 beats per minute across the entire pain scale.
This doesn’t mean your individual experience is wrong. Palpitations aren’t just about how fast your heart beats. They’re also about rhythm irregularities, the force of each heartbeat, and your awareness of your own heartbeat. You can feel a dramatic pounding in your chest even when your heart rate has barely changed. The sensation of palpitations and the measured heart rate are two different things, and pain can amplify both your heart’s activity and your sensitivity to it.
Chronic Pain Shifts Your Nervous System Baseline
If you live with ongoing pain, the effect on your heart isn’t limited to occasional spikes. People with chronic pain show reduced heart rate variability, which is a measure of how well your heart adapts to changing demands throughout the day. Healthy hearts constantly adjust their rhythm. In chronic pain, the nervous system shifts toward a persistent state of sympathetic dominance, meaning your body stays partially locked in stress mode even during rest.
This ongoing imbalance means your resting heart rate may run higher, and you may notice palpitations more frequently, not just during pain flares but during quiet moments when you’d expect to feel calm. The sustained release of stress hormones keeps your cardiovascular system on a low-level alert that, over time, becomes your new normal.
Anxiety Makes the Connection Stronger
Pain and anxiety frequently travel together, and anxiety is one of the most common causes of palpitations on its own. When both are present, they can create a feedback loop. You feel pain, which triggers a stress response, which causes palpitations. You then notice the palpitations and become anxious about your heart, which releases more adrenaline, which makes the palpitations worse.
Research on patients with non-cardiac chest pain found that people with anxiety disorders were especially vigilant about cardiac sensations and more fearful of them. This hyperawareness made their symptoms persist and feel more severe. Fear of the sensation itself played a mediating role: the more someone feared what the palpitations might mean, the more intensely they experienced them. This doesn’t mean the palpitations are imaginary. The heart is genuinely responding to real chemical signals. But the psychological layer can significantly amplify what you feel.
Pain Medications Can Also Play a Role
Sometimes it’s not the pain itself causing palpitations but the medication you’re taking for it. Common anti-inflammatory drugs (NSAIDs) like ibuprofen and diclofenac can affect the heart’s electrical channels. Research has shown that several NSAIDs interfere with the sodium and potassium channels that regulate heartbeat, which may contribute to arrhythmias, irregular rhythms, and in rare cases more serious cardiac events.
Opioid pain medications can also affect heart rhythm, sometimes slowing it and sometimes triggering rapid changes depending on the dose and your individual physiology. Even caffeine, which many people use alongside pain relievers or consume more of when they’re in pain and fatigued, is a well-known trigger for palpitations. If you’ve noticed a pattern between taking a specific pain medication and feeling your heart flutter or race, the medication itself may be the more direct cause.
When Palpitations Need Attention
Most pain-related palpitations are harmless. A brief flutter or a few strong beats during a painful episode, followed by a return to normal, is a predictable response from a nervous system doing its job. The American Heart Association distinguishes between occasional brief palpitations and those that warrant concern.
A single off-beat thump with no other symptoms is generally not a problem. Palpitations that last minutes to hours are more significant. And if palpitations come with lightheadedness, dizziness, shortness of breath, chest pain, or a feeling like you’re about to pass out, that combination needs prompt medical attention. The key distinction is between palpitations that clearly follow a pain trigger and resolve when the pain eases, versus palpitations that persist, escalate, or arrive with symptoms that suggest your heart itself may be in trouble. Chest discomfort combined with shortness of breath and nausea is a reason to call emergency services regardless of whether you think the cause is pain-related.
What You Can Do About It
If pain-related palpitations are a recurring issue for you, the most effective strategy is better pain management. Bringing the pain under control reduces the stress hormone surge that drives the palpitations in the first place. This might mean working with a provider to find more effective pain relief, or it might mean addressing chronic pain through approaches like physical therapy, nerve blocks, or other targeted treatments rather than relying solely on medications that may have their own cardiac effects.
In the moment, slow breathing can help counteract the sympathetic nervous system activation. Breathing slowly and deeply activates the parasympathetic (rest-and-digest) branch of your nervous system, which directly opposes the adrenaline surge. Even five or six slow breaths can measurably shift your heart rate and rhythm toward a calmer baseline. For people caught in the anxiety-palpitation loop, recognizing that the sensation is a normal stress response, not a sign of cardiac danger, can be enough to interrupt the cycle and let your heart rate settle.