Main signs of heart attack: What shouldn't be ignored?

If chest pain occurs suddenly and intensifies, and then spreads to the arms, back, as well as the neck or jaw, this is a reason to urgently see a doctor, British Heart Foundation reported.

Shortness of breath is another symptom of a heart attack, experts say.

Other signs that healthcare providers include sweating, dizziness, sudden feelings of anxiety, and excessive coughing or wheezing due to fluid buildup in the lungs.

With all these signs, you need to see a doctor as soon as possible.