1 doctor weighed in:

Why does your heart rate increase when you have a cold or the flu?

1 doctor weighed in
Dr Bryan Levey
Pediatrics

In brief: Many reasons

Heart rate increases with fever.
It increases with pain (which usually accompanies flu). It increases with dehydration, which happens more quickly than normal if you have a fever and aren't drinking well enough. It increases with combinations of all of the above. Rarely, it happens because the virus that is making you sick effects your heart directly.

In brief: Many reasons

Heart rate increases with fever.
It increases with pain (which usually accompanies flu). It increases with dehydration, which happens more quickly than normal if you have a fever and aren't drinking well enough. It increases with combinations of all of the above. Rarely, it happens because the virus that is making you sick effects your heart directly.
Dr Bryan Levey
Dr Bryan Levey
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