Anjali Singh Anjali Singh Asked 4 months ago

Can fever cause increased heart rate?

Whenever I get a fever, my heart feels like it's beating much faster than usual, even when I'm just lying down. Is it common for fever to cause such a noticeable increase in heart rate?

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5 answers

Kiran Kumar Kiran Kumar Joined Apr 2026 4 months ago
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Every time I get a fever, my heart starts pounding like crazy even when I am just lying in bed. My doctor told me it's just my body's natural way of pumping more blood to fight the infection. Usually, it settles down once the temperature drops.

Varun Mehta Varun Mehta Joined Apr 2026 4 months ago

Absolutely, my smartwatch always alerts me about a high resting heart rate whenever I run a fever. For every 1°F rise in body temperature, your heart rate can go up by about 8 to 10 beats per minute. Just monitor it and keep hydrated.

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Consult a cardiologist

Neha Sen Neha Sen Joined Jul 2026 4 months ago

Yes, totally! For every degree your body temperature rises, your heart beats quite a bit faster. It's super common and nothing to freak out about, but do make sure you drink plenty of water and rest up.

Suresh Pillai Suresh Pillai Joined Jan 2026 4 months ago

With diabetes, any infection or fever stresses the body, causing the heart rate to spike and glucose levels to fluctuate. Make sure you monitor your blood sugars closely during a fever and keep your doctor informed if the high heart rate persists.

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Rakesh Sharma Rakesh Sharma Joined Jun 2026 4 months ago

Don't panic, a fast heartbeat is normal when you have a fever. Just take a paracetamol if your doctor advised it, put a damp cloth on your forehead to cool down, and drink coconut water. Once the fever drops, your heart rate will go back to normal.

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