The most common symptom of coronary artery disease is angina or "angina pectoris," also known simply as chest pain. Angina can be described as a discomfort, heaviness, pressure, aching, burning, fullness, squeezing, or a painful feeling. Often, it can be mistaken for indigestion. If you have symptoms of angina, take notice. If you've never been diagnosed with heart disease, you should seek treatment immediately. If you've had angina before, use your angina medications as directed by your doctor and try to determine if this is your regular pattern of angina or if the symptoms are worse. Follow the links below to find WebMD's comprehensive coverage about angina, what it looks like, how to treat it, and much more.