After the flash back, the first local may have obvious pain, you can take oral painkillers, such as aminotrimadol or meloxicam tablets for pain, and try to rest in bed, with the local use of etofenacin gel, and creams, such as flurbiprofen babu cream. For mild lumbar pain, which generally belongs to ligament damage, with medication and rest, 3-5 days can significantly improve. But if it is serious pain, pay attention to the possibility of lumbar fracture caused by flashing back, this situation needs to go to the orthopedic department of the hospital in time to find a doctor’s interview, the waist should be routinely improved X-ray examination, if necessary, also need magnetic resonance examination. If there is a lumbar spine fracture, the recovery time is longer, it takes several months, bed rest is also longer, avoid blindly put weight on the ground, otherwise it may aggravate the condition.