Lumbar flash that acute lumbar sprain, how long since the sprain needs to be judged according to the severity of the sprain, generally need to be 3 days to 3 weeks, the more serious should also be coupled with a certain means of treatment to promote the recovery should not be completely rely on self-healing. Mild lumbar sprain, only the symptoms of lumbar pain, bed rest, pay attention to lumbar warmth, avoid coughing, sneezing and other actions, no special treatment is generally 3 to 5 days to recover. More serious lumbar sprain, not only soft tissue damage, may also be accompanied by lumbar vertebrae small joint protrusion dislocation or lumbar disc protrusion, manifested as obvious pain, limited activities, can not straight back, can not bear weight. In addition to rest and recuperation, can be combined with medication, local immobilization, physiotherapy, massage or functional exercises, generally 1 to 3 weeks to recover. If acute lumbar sprain occurs, and the injury is unknown, it is recommended to consult a doctor in time, under the guidance of the doctor for targeted treatment or therapy.