If the patient needs to identify whether it is a heartache or a stomachache, the first thing to do is to observe the location of the pain. For patients with heartache, the pain radiates along the heart toward the back of the sternum, and some patients have pain in the left shoulder, to the back of the left side, to the scapula area. The pain may not radiate to the fingertips on the left side, and is accompanied by pain in the frontal surface, mouth, and periodontal area. If the stomach pain does not have obvious radiating pain, patients with heart pain can usually be given appropriate relief by sublingual nitroglycerin or sublingual quick-acting heart pills, but patients with stomach pain will not have significant symptom relief by taking the above drugs. Patients with stomach pain usually have nausea, vomiting, acid reflux, heartburn and other accompanying symptoms when in pain, but patients with heartburn usually do not have obvious accompanying conditions as mentioned above.