What is the principal symptom of coronary artery disease?

Chest pain. Symptoms from coronary artery disease (CAD) can vary. The most common is angina and can include chest pain as well as pain in the arm, jaw, or abdomen. The pain typically gets worse with activity and better with rest. Shortness of breath can also develop, especially as the heart muscle begins to weaken from inadequate blood flow.
Many symptoms. Many symptoms. The most common are chest pain, shortness of breath, jaw pain, arm pain, sweating, fatigue, abdominal pain, leg pain, dizziness and also back pain. Sometimes coronary artery disease is a stealth disease and there are no symptoms.