The pain of muscular origin is not totally relieved by rest and may persist even after rest.
Local tenderness is present in case of pain of musculoskeletal in nature.
It may be made worse by deep breath, movement or change of posture. A friction rub known as Pericardial Rub is diagnostic, and is best heard by a stethoscope at the left of lower sternum. Pain due to oesophagitis has a burning quality and is relieved by taking Antaacids. Oesophagial spasm pain may at times be indistinguishable from angina.