There are many reasons for back pain, mainly including the following: 1, due to lumbar muscle strain or acute lumbar sprain, which is more common in daily life. Acute lumbar sprain can be relieved in a short period of time through rest and treatment, but if the lumbar muscle strain can not be relieved for a long period of time, it will often recur.2. Lumbar pain may be related to some lumbar diseases, commonly due to lumbar disc herniation, lumbar disc bulging and other diseases, which can lead to pain in the lumbar region, especially in the activities of not only the lumbar pain, but also numbness of the legs and other phenomena. In addition, some lumbar tumors and other diseases can also lead to the phenomenon of lumbar pain, this time should go to the hospital in time for CT or magnetic examination, can be clearly diagnosed. 3, lumbar pain may be related to herpes zoster infection, many people will appear after the phenomenon of herpes skin lumbar pain, this situation should be in the hospital for blood and fluid to make a diagnosis, for example, herpes zoster infection will appear after the situation of lumbar pain, through the herpes infection. Back pain can occur after herpes zoster infection, through the use of antiviral medication can be recovered within a certain period of time.