Symptoms of a heart attack usually last for 30 minutes or more, according to WebMD. The symptoms may disappear for a while and then return in some people. These symptoms typically do not improve with rest or by placing nitroglycerin under the tongue.
A number of symptoms are associated with a heart attack. Some of the most common include:
Although many heart attacks begin with subtle symptoms, or symptoms that come and go, anyone who is experiencing them should seek medical advice immediately.
It is also possible to have a heart attack without accompanying symptoms, which is known as a "silent" myocardial infarction. Although a silent MI can affect anyone, it is especially common in people with diabetes.