Heart spasms can cause vascular occlusion, which manifests itself in symptoms such as angina pectoris. Cardiac spasm is a transient constriction that occurs in the coronary arteries, which can cause incomplete occlusion of blood vessels. Patients may experience typical angina, mainly located behind the middle and lower part of the sternum, or slightly to the left, which may be accompanied by pain in the jaw, neck, left arm, or numbness. It may even be accompanied by pain in the jaw, neck, left arm, or numbness. Symptoms such as dyspnea, profuse sweating, and pallor may be induced by emotional stress, exposure to cold, overexertion, nervousness, and anxiety, as well as aggravation of the symptoms. If the cardiac spasm is more serious, it may induce arrhythmia and the symptoms of ventricular tachycardia. If you experience any of the above symptoms, you should seek medical attention from your doctor to avoid delays.