Bending for a while on lumbago, the following common causes: First, the patient’s own factors: the patient is an elderly patient or female patients, the lumbar muscles themselves are weak, bending for a while within the muscle will produce lactic acid, stimulate the nerve patients can have clinical symptoms of lumbago, the symptoms will soon be relieved after the activity of the waist. Second, lumbar disc herniation: patients usually bending will also induce the clinical symptoms of lumbago, if it is an acute attack, the clinical symptoms of lumbago will persist and will increase, and can involve one lower limb or bilateral lower limbs, seriously affecting daily life. Therefore, if lumbago can occur after bending for a while, you should go to orthopedic clinic as soon as possible and get prompt treatment to improve the clinical symptoms rapidly.