“Is profuse sweating a sign of a heart attack?”

Profuse perspiration, hyperhidrosis, in the absence of an obvious cause may be one of the signs of a heart attack but rarely alone. When associated with a heart attack, or myocardial infarction, it is usually accompanied by other vagal symptoms such as pallor, a sense of coldness, a sense of weakness, impending doom, and nausea. Of course, tightness and a constricting feeling in the chest is the classic symptom of a heart attack but one have all of the symptoms or just a few or even none, a silent heart attack.

Profuse sweating is occasionally an accompanying symptom during a heart attack. I would say this is more common during what is called an inferior myocardial infarction which is a heart attack on the bottom wall of the heart typically from closing the right coronary artery. It’s usually also associated with chest discomfort and sometimes nausea.