chest pain

Chest pain is any discomfort felt between the neck and the upper belly, in or behind the breastbone. Think of it as a fire alarm: it tells you something may be wrong, but the alarm itself does not say whether the trouble is a small toaster fire or a burning building. Many things cause it — the heart, the lungs, the gullet, muscles, ribs, even anxiety — and an important early job for any clinician is to sort the dangerous causes from the harmless ones.

The cardiac kind of chest pain usually comes from the heart muscle not getting enough oxygen-rich blood, a state called ischemia. People often describe it as pressure, tightness, squeezing, or a heavy weight rather than a sharp stab, and it may spread to the arm, jaw, neck, or back. Pain brought on by exertion and eased by rest points toward the heart; pain that changes with breathing, position, or pressing on the chest more often comes from the chest wall, lining, or lungs — though these patterns are clues, not proof.

Because a heart attack can present as chest pain, sudden, severe, or persistent chest discomfort — especially with sweating, nausea, breathlessness, or fainting — is treated as an emergency until proven otherwise. Clinicians combine the story, an electrocardiogram, and blood tests for heart-muscle injury to decide. This entry is educational reference and not a substitute for urgent medical care when symptoms are worrying.