Heart Palpitations (Tachycardia): Symptoms, Causes, and Treatment

Overview of Tachycardia

Tachycardia refers to a condition in which the heart beats significantly faster than normal — typically over 100 beats per minute.

A rapid heartbeat may be a normal physiological response to non-cardiac causes or a warning sign of a serious cardiovascular disorder. Both supraventricular and ventricular tachycardias can be dangerous or even life-threatening.

Under normal conditions, the heart beats between 60 and 100 times per minute. The rate may drop below 60 bpm in people who are physically fit or taking medications that slow the heart rate.

Heart palpitations can feel unpleasant or frightening. However, they are often harmless and self-limited, most commonly triggered by stress, anxiety, excessive caffeine, nicotine, or alcohol intake. They may also occur during pregnancy.
In some cases, though, palpitations may indicate an underlying heart condition that requires medical attention.

Symptoms of a Fast Heartbeat

Common signs and sensations

A fast heartbeat may feel like your heart is:

• Skipping beats
• Fluttering rapidly
• Beating harder than usual
• Racing irregularly for several seconds or even minutes

You might notice these sensations in your chest, throat, or neck, whether you’re active or at rest.

Other accompanying symptoms

• Strong or rapid heartbeat: The most common symptom, often felt in the chest, neck, or even ears.
• Shortness of breath: Breathing may become labored, especially during physical activity.
• Dizziness or lightheadedness: Palpitations can cause a spinning sensation or even fainting.
• Chest pain: Not always present, but may occur if the tachycardia is linked to underlying heart disease.
• Fatigue: Unusual tiredness due to the heart working harder than normal.
• Irregular heartbeat: A sensation of skipped or uneven heartbeats.
• Anxiety or restlessness: A fast heart rate may sometimes trigger unexplained nervousness or panic.

When to See a Doctor

If you notice episodes of a fast or irregular heartbeat, you should consult a healthcare professional.
After reviewing your medical history and performing a physical examination (including heart and lung auscultation), your doctor may order tests to identify the cause. Once the underlying cause is found, appropriate treatment can help reduce or eliminate the palpitations.

If no specific cause is identified, lifestyle modifications — such as stress management and avoiding stimulants — can often provide relief.

You should seek immediate medical care if a fast heartbeat is accompanied by any of the following:

• Shortness of breath
• Dizziness or fainting
• Chest pain or discomfort
• Palpitations that persist, worsen, or fail to improve
• A history of heart disease
• Anxiety or concern about a persistently fast heart rate

Causes of Heart Palpitations

Heart palpitations can arise from a wide range of causes. In general, they may be associated with heart-related conditions or factors unrelated to the heart.

Non-cardiac causes

Strong emotions: Stress, anxiety, or excitement can trigger temporary increases in heart rate.

Lack of sleep or overexertion: Palpitations may occur after intense exercise or physical activity.

Caffeine and stimulants: Coffee, tea, energy drinks, or other stimulants can increase heart rate.

Alcohol, tobacco, and sugary or carbonated beverages: These substances may cause or worsen palpitations in some people.

Hormonal changes: Pregnancy, menopause, or thyroid disorders can influence heart rhythm.

Medications: Certain drugs — including diet pills, decongestants, asthma inhalers, or medications used to prevent arrhythmias or treat hypothyroidism — may cause palpitations.

Dietary supplements and herbal products: Some supplements can affect heart rate or rhythm.

Electrolyte imbalances: Low or high levels of electrolytes such as potassium, magnesium, or sodium can disrupt heart rhythm.

Non-cardiac medical conditions: Hyperthyroidism (Graves’ disease), hypoglycemia, anemia, low blood pressure, fever, dehydration, or autonomic nervous system disorders can all cause palpitations.

After heavy meals: Some people experience palpitations after consuming large meals high in carbohydrates, sugar, or fat. Foods containing monosodium glutamate (MSG), nitrates, or sodium may also trigger this symptom.

Cardiac causes

Heart palpitations may also be linked to cardiac arrhythmias or other structural heart conditions, such as:

• Prior to a heart attack (myocardial infarction)
• Coronary artery disease
• Heart failure
• Heart valve disorders
• Cardiomyopathies (diseases of the heart muscle)

Risk Factors for Heart Palpitations

Who is at higher risk?

You may be more likely to experience heart palpitations if you:

• Have a history of heart disease
• Have metabolic or thyroid disorders
• Are pregnant or postmenopausal
• Experience psychological stress or anxiety
• Take certain medications that can affect heart rhythm

Common risk-enhancing factors

• Experiencing severe stress or frequent anxiety attacks
• Being pregnant
• Taking medications containing stimulants, such as some cold or asthma drugs
• Having overactive thyroid (hyperthyroidism)
• Having a history of heart rhythm disorders, congenital heart defects, heart attack, or previous cardiac surgery

Diagnosis and Treatment of Heart Palpitations (Tachycardia)

Diagnostic Methods and Tests for Heart Palpitations

Your doctor will use a stethoscope to listen to your heart and inquire about your medical history while performing a physical examination to detect any signs of an underlying condition that may be causing your rapid heartbeat, such as an enlarged thyroid gland.

If your doctor suspects that your palpitations are caused by a cardiac arrhythmia or another heart condition, the following tests may be recommended:

Electrocardiogram (ECG or EKG): In this non-invasive test, electrodes are placed on your chest to record the electrical signals that trigger your heartbeat. An ECG can help detect abnormalities in heart rhythm and structure that may cause tachycardia. The test can be performed while you are resting or during exercise (stress ECG).

Holter Monitoring: You wear a portable device on your chest that continuously records your heart’s electrical activity for 24 to 48 hours. It can detect rhythm abnormalities that might not appear during a standard ECG.

Event Recorder: This is a wearable device that monitors your heart’s electrical activity for several days or weeks. You activate it by pressing a button whenever symptoms occur, allowing your doctor to analyze rhythm changes during specific episodes.

Chest X-ray: Used to evaluate changes in your lungs that may be caused by heart problems. For instance, fluid accumulation in the lungs may indicate heart failure.

Echocardiogram: This imaging test provides detailed information about your heart’s structure and function using ultrasound waves.

Blood Tests: These may include CK-MB, Troponin, Creatine Kinase, and lipid profile to assess cardiac damage or metabolic issues.

Additional Imaging or Laboratory Tests: These may be performed if another organ-related condition (such as thyroid disease or electrolyte imbalance) is suspected to be affecting your heart rate.

How to Slow Down a Rapid Heartbeat

Unless your doctor identifies an underlying cardiac or systemic cause—such as hyperthyroidism, Graves’ disease, or hypertension—most stress-related or benign palpitations do not require medical treatment.

Instead, your healthcare provider may recommend certain lifestyle adjustments to help manage and prevent rapid heartbeats:

Relaxation Techniques: Practice meditation, yoga, or listening to calming music to reduce stress and promote relaxation, helping to lower heart rate.

Deep Breathing Exercises: Engage in slow, deep breathing to trigger the body’s natural relaxation response and stabilize your heartbeat.

Light Physical Activity: Gentle exercises such as walking or swimming can improve cardiovascular function and help regulate heart rhythm over time.

Healthy Diet: Eat plenty of fruits, vegetables, and whole grains to support heart health. Limit fried, fatty, and processed foods, as well as organ meats.

Lifestyle Modifications: Avoid or reduce consumption of caffeine, alcohol, and stimulants; quit smoking; maintain adequate sleep; and establish a regular daily routine to support overall cardiovascular health.

Emotional Regulation: Learn to manage anxiety and emotional stress through therapy or counseling to prevent heart rate spikes triggered by strong emotions.

Lifestyle and Prevention of Heart Palpitations

Healthy Habits to Help Reduce Heart Palpitations

The most effective way to manage palpitations at home is to identify and avoid potential triggers. Adopting the following lifestyle habits can help limit the recurrence or progression of tachycardia:

Reduce Stress: Practice relaxation techniques such as meditation, yoga, or deep breathing exercises to calm your mind and body.

Avoid Stimulants: Substances like caffeine, nicotine, certain cold medications, and energy drinks may cause your heart to beat faster or irregularly.

Avoid Illicit Drugs: Stimulant drugs such as cocaine and amphetamines can cause rapid or irregular heartbeats and should be strictly avoided.

Preventive Measures for Rapid Heartbeat

To maintain a healthy heart rhythm and prevent episodes of palpitations, consider the following preventive strategies:

Maintain Regular Exercise and a Balanced Diet: Engage in moderate physical activity and follow a diet rich in vegetables, fruits, whole grains, and lean proteins to support cardiovascular health.

Take Medications as Prescribed: If you are on medication for heart disease or any cardiovascular condition, take it exactly as directed by your doctor.

Manage Stress: Keep your mind relaxed and avoid chronic emotional tension or anxiety.

Avoid Smoking: Nicotine can increase heart rate and raise the risk of arrhythmias.

Limit or Avoid Alcohol: Reducing alcohol intake—or avoiding it entirely—can help stabilize your heart rhythm.

Stay Hydrated: Drink enough water daily to maintain proper electrolyte balance and prevent dehydration.

Get Adequate Sleep: Ensure sufficient, regular sleep to help your cardiovascular system recover and maintain rhythm stability.

Before taking any new medications or supplements, consult your doctor or pharmacist to make sure they do not cause palpitations. For instance, certain decongestants containing pseudoephedrine or phenylephrine may trigger a rapid heartbeat.