Right posterior back pain symptoms may be caused by lumbar trauma, muscle strain, lumbar disc herniation and other factors. 1. Lumbar trauma: direct action of trauma or sharp twisting of the lumbar region can lead to soft tissue injury, resulting in swelling, pain and restricted movement in the lumbar region. 2. Muscle strain: prolonged over-activity or cold stimulation of the lumbar region can trigger muscle strain, localized aseptic inflammation can occur, stimulated by the inflammation of the lumbar region can be painful and uncomfortable symptoms. 3. Lumbar disc herniation: the protruding nucleus pulposus compresses the nerves, which can lead to numbness and pain in the lumbar region innervated by the nerves. 4. Other: urinary stones, kidney cysts, kidney tumors and other diseases can cause pain in the lumbar surface projection area. If you suffer from right back pain, you should consult a doctor in time and take active treatment under the guidance of a specialized doctor, which will help to improve the symptoms of lumbar pain and discomfort as soon as possible.