There are several possible causes of back pain: first, intercostal neuralgia, which can be hidden, paroxysmal, or radiating pain, and should be diagnosed by examination to exclude other diseases. Second, heart disease, when the heart has a heart attack, angina pectoris, there can also be paroxysmal radiating pain in the left back, to be diagnosed by ultrasound, electrocardiogram or imaging of the heart. Third, gallbladder disease, when gallbladder cholecystitis, gallbladder stones, can also appear paroxysmal right posterior back radiating pain, the gallbladder ultrasound, CT examination for diagnosis and treatment. Fourth, herpes zoster, in the early stage of herpes zoster, can also appear back pain, can also be paroxysmal, to be observed 1-2 weeks, after the incubation period can appear herpes, to go to the dermatology department for diagnosis and treatment.