Heart Palpitations

Heart & Circulation

If this is an emergency, call 911 now. This tool is for general information, not emergency guidance. If you're having severe symptoms, don't read this — get help.

What the internet says

Atrial fibrillation. Supraventricular tachycardia. Heart failure. Thyroid storm.

What it probably actually is

Caffeine (coffee, tea, energy drinks, even chocolate). Dehydration. Stress or anxiety. A heavy meal. Vigorous exercise. Not enough sleep. Alcohol. Certain medications.

🧠 The full picture

Your heart skips and flutters all the time — you just don't usually notice it. When you're tired, anxious, or caffeinated, you become more aware of your heartbeat. That awareness can feel alarming but usually isn't. Benign palpitations are extremely common — studies suggest up to 16% of people experience them regularly.

⚠️ When to actually call your doctor

These are real red flags. If any of these apply, don't wait.

Accompanied by chest pain, shortness of breath, or fainting
Heart races over 150 bpm for more than a few minutes
You feel genuinely faint or actually lose consciousness
Palpitations are regular and fast (not just occasional flutters)
You have a known heart condition

📚 Sources

This information is based on guidance from:

American Heart AssociationNIH MedlinePlusMayo Clinic Clinical Research

Always verify important health decisions with your doctor or a qualified healthcare provider.

🔗 Related symptoms

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