Home Remedies for Angina Angina is defined as the pain in the chest region. This is caused mainly due to the blockage of the coronary artery. Other major causes are the atherosclerosis, improper contraction of the cardiac muscles and lack of oxygen in the heart. It is defined as one of the important symptoms of some complications related to the cardiovascular system, especially the coronary artery. Symptoms Breathlessness Chest Pain Weakness in left arm Numbness Discomfort and tightness of chest