Low back pain a few days can recover according to the cause of the specific analysis, the common acute lumbar sprain generally about a week can recover, lumbar disc herniation acute attack routine two weeks can be relieved. 1. Acute lumbar sprain: Acute lumbar sprain is very common in daily life and is a major cause of back pain. Acute lumbar sprain patients will experience sudden and severe pain in the lumbar region, and some patients may also experience symptoms such as lumbar muscle spasms and restricted movement. Most patients can recover from low back pain in about a week after symptomatic treatment. 2. Acute attack of lumbar intervertebral disc herniation: patients with lumbar intervertebral disc herniation may suffer from acute attack of the disease if they are suddenly stimulated by external force, causing severe pain in the lumbar region, as well as radiating pain and numbness in both lower limbs. In most patients, the symptoms can be relieved in about two weeks after treatment to reduce swelling and nourish the nerves. Lumbar protrusion may also have symptoms that continue to worsen, indicating a more serious condition, so be sure to seek medical attention and treatment. There are other causes of low back pain, if the patient’s symptoms of low back pain are serious, or the symptoms continue without improvement, should promptly go to the hospital for treatment.