The location of pain in angina pectoris is mainly concentrated in the precordial area of the left front chest, and may also radiate to the left shoulder and other areas. The pain of angina pectoris is mainly concentrated in the retrosternal, precordial area, which is near the location of the left anterior chest. The pain is mostly confined near the heart, but can also radiate to the left shoulder, the inside of the left arm, or the ring and little fingers. Some angina attacks can radiate to the jaw, neck or throat, and some may even present with toothache, double shoulder or arm pain, or even right chest pain. Because the pain sensation of angina is caused by nerve reflexes, and the nerves that innervate the heart and those that innervate the neck and chest and abdominal organs partially overlap, some angina attacks involve other organs, and there will be epigastric and stomach discomfort similar to the bile-cardiac syndrome, gastro-cardiac syndrome, and so on. The nature of angina is usually dull pain or just chest tightness, which may be accompanied by a feeling of strangulation of the heart, or in some patients, pinprick or knife-like pain. Angina attacks are often triggered by activities such as running or lifting heavy objects, emotional stress such as anger or excitement, or cold. If you feel unwell, it is recommended that you consult a doctor in a timely manner and undergo ECG and other relevant tests to make a clear diagnosis and then carry out the appropriate treatment.