Heart Palpitations: Causes, When to Worry, and Treatment

Heart palpitations make you unusually aware of your heartbeat—it may feel fast, pounding, or irregular. They're often caused by stress, caffeine, or medications and aren't serious. But if accompanied by chest pain, fainting, or severe dizziness, seek emergency care. Most cases resolve on their own, but persistent or concerning symptoms should be evaluated by a doctor.

In plain words

Heart palpitations make you feel your heart beating in a strange way. It might feel like your heart is pounding, fluttering, or skipping beats. You might feel this in your chest, throat, or neck. Many times, palpitations are not serious. They can be caused by stress, caffeine, or being tired. But sometimes they can mean a heart problem. If you have chest pain, can't breathe well, or faint with palpitations, get emergency help right away.

What is Heart Palpitations: Causes, When to Worry, and Treatment?

Heart palpitations make you unusually aware of your heartbeat—it may feel fast, pounding, or irregular. They're often caused by stress, caffeine, or medications and aren't serious. But if accompanied by chest pain, fainting, or severe dizziness, seek emergency care. Most cases resolve on their own, but persistent or concerning symptoms should be evaluated by a doctor.

Symptoms

Early symptoms

  • Pounding or fluttering sensation: Feeling like your heart is beating too hard or fast, or like it's flipping in your chest. Often lasts seconds to minutes and may occur at rest or during activity. (2) (3)
  • Skipped beats: Feeling like your heart skips a beat followed by a stronger thump. This is often a harmless premature ventricular contraction (PVC). (4) (3)
  • Increased awareness of heartbeat: Noticing your heart beating when you normally wouldn't, especially when lying down or trying to sleep. (2)
  • Brief episodes that self-resolve: Episodes that come and go quickly (under 5 minutes) without other troubling symptoms like chest pain or fainting. (1) (4)

Serious or emergency symptoms

  • Chest pain or pressure: Palpitations accompanied by chest discomfort, tightness, or pain that may radiate to the arm, jaw, or back. This could signal a heart attack or arrhythmia. Call emergency services immediately. (5) (6)
  • Fainting or near-fainting: Losing consciousness or feeling like you might pass out during palpitations suggests inadequate blood flow to the brain. Seek emergency medical care. (5) (6)
  • Severe shortness of breath: Difficulty breathing that comes on suddenly with palpitations may indicate heart failure or pulmonary embolism. Get emergency help right away. (5)
  • Rapid irregular heartbeat lasting over 30 minutes: Persistent irregular rhythms (especially over 120 bpm at rest) may indicate atrial fibrillation or other dangerous arrhythmias. Go to urgent care or call your doctor immediately. (6)

Causes

Primary causes

  • Stress, anxiety, and panic attacks: Stress hormones like adrenaline can make your heart race or feel like it's skipping beats. Anxiety-induced palpitations often feel intense but are usually harmless. (2) (4)
  • Caffeine, nicotine, and stimulants: Coffee, energy drinks, cigarettes, and some medications (like asthma inhalers or decongestants) can trigger palpitations by stimulating the heart. (4) (3)
  • Hormonal changes: Pregnancy, menopause, or menstruation can cause palpitations due to hormonal fluctuations and increased blood volume. (3) (2)
  • Exercise and dehydration: Vigorous activity and low fluid/electrolyte levels can lead to unusual heart sensations as your heart works harder to pump blood. (4) (3)

Contributing factors

  • Arrhythmias (abnormal heart rhythms): Conditions like atrial fibrillation, supraventricular tachycardia, or ventricular arrhythmias can cause palpitations and require medical evaluation. (1)

Risk factors

History of heart disease

People with prior heart attacks, heart failure, or valve problems are at higher risk for arrhythmia-related palpitations. (4)

Anxiety disorders

Those with chronic anxiety or panic attacks often experience frequent palpitations due to heightened stress responses. (4)

Thyroid problems

Overactive thyroid (hyperthyroidism) makes the heart more sensitive to stimulation, increasing palpitation risk. (4)

Diagnosis

Your doctor will start with a physical exam and discussion of your symptoms. They may order an electrocardiogram (ECG) to check your heart's electrical activity, though palpitations don't always show up during brief tests. For frequent episodes, a portable Holter monitor records your heartbeat continuously for 24-48 hours. Other tests might include an echocardiogram (heart ultrasound), stress test, or blood work to check for underlying conditions like anemia or thyroid disease.

Electrocardiogram (ECG)

Records your heart's electrical activity to detect rhythm abnormalities happening during the test. (8)

Holter monitor

Worn for 24-48 hours to continuously record your heart rhythm and catch intermittent palpitations. (8) (6)

Event recorder

A portable device you activate when symptoms occur to record your heart rhythm during episodes. (8)

Treatment

Medication options

Beta-blockers

Reduce the effect of adrenaline on your heart, slowing heart rate and decreasing palpitation frequency. (7) (8)

Anti-arrhythmic medications

Help restore normal heart rhythm in cases of diagnosed arrhythmias causing palpitations. (8)

Lifestyle and self-care

  • Reduce stimulants: Cut back on caffeine, nicotine, and energy drinks—common palpitation triggers. The NHS recommends limiting coffee to 1-2 cups daily and avoiding caffeine after midday. (7) (5)
  • Practice stress reduction: Try relaxation techniques like deep breathing, meditation, or yoga to lower adrenaline levels that can trigger palpitations. (5) (7)
  • Stay hydrated: Drink enough water daily, especially in hot weather or during exercise, to prevent electrolyte imbalances that affect heart rhythm. (5)
  • Vagal maneuvers: Simple techniques like bearing down (as if having a bowel movement), coughing, or putting cold water on your face can sometimes stop palpitations by stimulating the vagus nerve. (5)

Always discuss dosing and treatment changes with your own prescriber.

Possible complications

  • Fainting (syncope): If your heart beats irregularly enough to reduce blood flow to your brain, you could lose consciousness and risk injury from falls. (5)
  • Stroke: Some arrhythmias associated with palpitations (like atrial fibrillation) can cause blood clots that may lead to stroke if untreated. (1)
  • Heart failure: Persistent, untreated arrhythmias may weaken the heart over time, reducing its ability to pump effectively. (1)

When to see a doctor

Routine follow-up

  • Schedule an appointment if you have frequent palpitations that bother you, last longer than a few seconds, or are associated with mild dizziness or fatigue. (2) (6)
  • See your doctor if you have a history of heart disease or risk factors (like high blood pressure) and experience new palpitations. (6)

Seek emergency care

  • Call emergency services immediately if palpitations occur with chest pain, pressure, severe shortness of breath, fainting, or confusion. (5) (6)
  • Seek urgent care if you have new, unexplained palpitations along with weakness, sweating, or nausea—especially if you have diabetes or kidney disease. (1)

Frequently asked questions

Are heart palpitations dangerous?

Most palpitations aren't dangerous and resolve on their own. However, if accompanied by chest pain, fainting, or severe dizziness, they could signal a serious condition needing immediate care. Otherwise healthy people often have benign palpitations triggered by stress or caffeine. (2) (5)

Can anxiety cause heart palpitations?

Yes—anxiety is a common cause. Stress triggers adrenaline release that can make your heart race or skip beats. These episodes feel intense but are usually harmless. Managing stress through relaxation or therapy often helps reduce their frequency. (4) (2)

When should I go to the ER for palpitations?

Seek emergency care if palpitations come with chest discomfort, fainting, difficulty breathing, or confusion. The American Heart Association warns these could indicate a heart attack, stroke, or life-threatening arrhythmia requiring immediate treatment. (6) (5)

How can I stop palpitations immediately?

Try calming techniques: sit down, sip cold water, or perform vagal maneuvers like coughing or bearing down. Deep, slow breathing can help reset your rhythm. The Cleveland Clinic cautions against lying flat—remaining upright often helps more. (5) (7)

Can dehydration cause heart palpitations?

Yes—low fluid levels make your heart work harder, and electrolyte imbalances can trigger irregular beats. Rehydrating with electrolyte-containing fluids often helps, but persistent symptoms warrant medical review to check for other causes. (3) (4)

References

  1. CDC — About Arrhythmia source 1
  2. NHS — Heart palpitations and ectopic beats source 2
  3. MedlinePlus — Heart palpitations source 3
  4. Mayo Clinic — Heart palpitations - Symptoms and causes source 4
  5. Cleveland Clinic — Heart Palpitations source 5
  6. American Heart Association — When to Evaluate Heart Palpitations source 6
  7. NHS — Heart palpitations - Treatment source 7
  8. Mayo Clinic — Heart palpitations - Diagnosis and treatment source 8