No one symptom or sign can certainly justifiably suggest a heart attack nor can the lack of any sign or symptom justify. The common signs and symptoms include crushing pain in the left side of chest that may radiate to left arm or jaw with sweating, feeling of impending doom and palpitation or an increased conscious feeling of your own heart. Heart attacks can also be preceded by sudden loss of consciousness, giddiness, racing heart beat and can be totally painless.
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