The pain in the arm pits may be caused by neuralgia and myocardial ischemia, etc. 1. Neuralgia: generally refers to the pain caused by damage to the somatosensory system, manifested by muscle spasm, muscle weakness, muscle atrophy, armpit pain and other symptoms, can be treated with gabapentin, amitriptyline, lidocaine, nortriptyline and other drugs. 2. Myocardial ischemia: generally due to coronary artery stenosis, coronary artery spasm, coronary artery embolism, etc., manifested as chest tightness, palpitations, shortness of breath, dyspnea, armpit pain and other symptoms, can be treated with aspirin, clopidogrel, Tegretol, Pragma, indobufen and other drugs. Arm pit pain needs to go to the hospital in time, under the guidance of the doctor’s instructions for standardized treatment.