What is angina. and what are the symtoms?

Angina is symptom of: Underlying heart problem. Often described as severe chest pain like tight band or heavy weight on chest or vise squeezing chest. May be accompanied by nausea; pain/numbness/ tingling in left neck/shoulder/arm; profuse sweating. Caused by decreased oxygen to heart muscle due to blockage (plaque or clot) or spasm. Requires immediate attention.

Angina: Angina is a specific term for chest pain that results from decreased blood supply to the heart muscle because of a hemodynamically significant coronary artery blockage. It is a symptom.