Back injuries refer to damage or strain to the muscles, ligaments, or discs in the spine. Common causes include heavy lifting, poor posture, and sudden movements. Symptoms often include pain, stiffness, and limited mobility, which can affect daily activities. Treatment for back injuries typically involves rest, physical therapy, and pain management. In some cases, medical intervention may be necessary, such as surgery for severe injuries. Preventive measures include maintaining a healthy weight, exercising regularly, and using proper techniques when lifting heavy objects.