sweating, nausea, breathlessness, weakness, or pain spreading to other parts of the upper body.
Shortness of Breath
Feeling short of breath without a clear reason can be a serious sign. It may happen while walking, climbing stairs, lying down, or even resting.
Shortness of breath can appear with or without chest discomfort during a heart attack. It can also happen with heart failure, where the heart cannot pump
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