A flashed back is medically known as an acute lumbar sprain. The main cause of acute lumbar sprain is coughing which pulls the muscles of the lower back too much, resulting in a strain on the muscles of the lower back. Acute lumbar sprain after the common treatment methods are: physical therapy and drug treatment. 1. Physical therapy: acute lumbar sprain should be bed rest, cold compresses within 72 hours to prevent lumbar edema and reduce inflammation. 72 hours after the doctor’s guidance for professional physical therapy training, such as massage, massage, acupuncture, hot compresses, etc. to relieve the symptoms of lumbar pain. 2. Medication: Acute lumbar sprain patients can take non-steroidal anti-inflammatory painkillers such as ibuprofen, acetaminophen, diclofenac sodium and so on. Can also be used externally to activate blood circulation and eliminate blood stasis of the cream, such as Panax notoginseng injury ointment, dampness pain relief cream, etc., to achieve the effect of relieving lumbar pain. Acute lumbar sprain patients should seek medical treatment in time, actively cooperate with the doctor’s diagnosis and treatment, avoid self-medication or treatment in irregular clinics, to avoid delaying the condition or causing serious consequences.