I feel dizziness and acceleration in the heart ...

Hi, four days ago, I'm feeling very dizzy, followed by an acceleration in my heart. It always happens when I smoke or I get nervous. Should I worry?
Expert answer:

Worried you already are. and with the cigarette should worry yes. Several other factors need to be evaluated to determine whether it is of concern (age, weight, personal and family history, and other risk factors).

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