People often say “flash back” is actually an acute lumbar sprain, is a common orthopedic injury disease. Carrying heavy objects, incorrect posture, excessive force and external collision may cause soft tissue damage to the waist, resulting in acute lumbar sprain. Treatment of lumbar sprain is divided into “three steps”: Step 1: take the correct posture to rest The lumbar sprain must be quiet rest, and pay attention to the correct posture. If a comfortable posture still can not relieve pain, indicating that there is inflammation in the muscle injury, consider using analgesics, such as Fotarim, Fenbid and other drugs, but under the guidance of a doctor to use. Step 2: Eliminate inflammation through ice compresses Within 1-2 days after a lumbar sprain, it is best to do ice compresses on the painful area to eliminate the inflammation generated around the muscles and intervertebral discs. Step 3: Relieve muscle spasm through hot compresses Inflammation begins to subside on the third day after recuperation, and pain slowly decreases. This is the time to start using hot compresses to eliminate muscle spasms and relax the muscles. If the above measures still do not relieve the back pain, you should go to the hospital as soon as possible to avoid delaying treatment. Along with the treatment, you can also carry out some supplementary treatment at home as appropriate. For example, massage of the lumbar region with the assistance of family members. Patients take a prone position, family members with the palm of the hand from the top to the bottom of the spine while kneading pressure on both sides to the buttocks, and massage down to the thighs and calves behind the muscle group, repeatedly repeat the above massage action. In addition, you can also use hot salt or sand wrapped in a cloth bag, hot compress sprains, half an hour each time, once in the morning and once in the evening.