Im 18 and experiencing palpitations out of nowhere, like my heart races hard even when Im just chilling. Its weird because Im not anxious, and all my tests like ECG and chest x-ray are showing normal results with normal sinus rhythm. My cardiac shadow came out normal too. So what could be causing these palpitations when Im just at rest?

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Dr Anshul Maheshwari

General Practitioner

MBBS
5+ Yrs

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It's good that your ECG and chest x-ray results are normal. Palpitations can sometimes occur without any underlying heart condition. In your case, since there is no apparent cause for the palpitations, you may consider taking a beta-blocker medication such as Metoprolol (25-50mg) to help reduce the palpitations and the sensation of your heart beating fast. Additionally, practicing stress-reducing techniques such as deep breathing exercises or yoga may also help alleviate the symptoms.

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Answered 04/07/2025

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Potential Causes: a. Caffeine or stimulant intake (e.g., energy drinks, coffee). b. Dehydration or electrolyte imbalances. c. Hormonal changes or thyroid issues.
Recommendations: a. Monitor and reduce caffeine or stimulant consumption. b. Ensure adequate hydration and balanced diet. c. Consider a thyroid function test if symptoms persist.
When to Seek Further Help: a. If palpitations are accompanied by dizziness, chest pain, or shortness of breath. b. If symptoms worsen or become more frequent.

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Answered 10/09/2025

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