Which of the following is a sign of a heart attack?

Nausea or vomiting can indeed be a sign of a heart attack. During a heart attack, the body may respond with various symptoms due to the stress and discomfort of the heart not receiving sufficient blood flow. The sensation of nausea occurs because the heart, being under duress, can affect other systems in the body, including the gastrointestinal system, leading to feelings of sickness or actual vomiting.

This symptom is particularly notable because it may not be traditionally associated with heart problems, which can make it easy to overlook. However, many individuals experiencing a heart attack report symptoms such as nausea alongside more commonly known signs like chest pain or discomfort, shortness of breath, or pain radiating to the arms, jaw, or back.

In contrast, the other symptoms listed do not typically connect to a heart attack. A sudden headache might indicate other medical issues, difficulty walking could result from neurological or musculoskeletal problems, and sharp pain in the leg is more often associated with vascular issues rather than cardiac events. Recognizing the signs of a heart attack is crucial for timely intervention, and nausea or vomiting is a valid symptom to monitor.