Angina

American Heart Association: What is Angina Pectoris?

Answers what causes angina pectoris, when angina often occurs, as well as the differences between stable, unstable, and variant angina pectoris.

National Heart, Lung, and Blood Institute: What Is Angina?

Provides a profile of angina pectoris, the chest pain or discomfort that occurs when your heart muscle does not get enough blood. The National Heart, Lung, and Blood Institute describes the differences between stable, unstable, and variant angina, including information on signs and symptoms, diagnosis, treatments, and other names for angina.

MedicineNet.com: Chest Pain Due to Angina and Other Causes

Contains an article on angina pectoris and the causes, symptoms, and treatment options for the chest discomfort that occurs when the heart muscle does not get enough blood oxygen.