Warning signs of a heart attack
Many heart attacks start as a mild discomfort in the center of the chest. Someone who feels such a warning may not be sure what is wrong. Even people who have had a heart attack may not recognize the signs, because the next one can have entirely different symptoms.
Shortness of breath
This symptom often accompanies chest discomfort. However, it can also occur before the chest discomfort.
These may include breaking out in a cold sweat, nausea, or light-headedness.
Most heart attacks involve discomfort in the center of the chest that lasts for more than a few minutes or that goes away and comes back. The discomfort can feel like uncomfortable pressure, squeezing, or fullness.
Discomfort in other areas of the upper body
Symptoms can include discomfort in one or both arms or in the back, neck, jaw, or stomach.