Anyone worried about chest pain should not wait to get urgent medical care. They should call for an ambulance straight away, especially if the pain is unexplained, sudden, or severe.
Heart attack pain is caused when one of the arteries supplying the heart becomes blocked. Angina is a similar chest pain caused when these arteries are narrowed by heart disease.
Heartburn is a burning pain often felt in the upper belly or lower chest. It is caused by stomach acid going back up the food pipe.
Source: medicalnewstoday