Pain in the chest does not always mean that there is anything wrong
with your heart. Some people mistake simple aches from muscles and nerves
in the chest for angina. Anxiety and tension are common causes of pain in
the chest. Sometimes this is sharp stabbing feeling but it may be a persistent
ache under the left breast. These sensations are different from those of
angina, which is very seldom located in this region. Such pains may be
accompanied by tenderness, or be made worse by movement. Gall bladder
trouble or indigestion can also cause pain which seems to be near the heart.
Pain from these causes is usually related to food rather than exercise.
A heart attack (coronary thrombosis or myocardial infarct) occurs when
an artery has become very narrow or completely blocked. The pain is more
severe and lasts longer. The patient may sweat and feel sick. A nitrate tablet
does not help.