This occurs when the spinal canal narrows and the spinal cord and nerves are squeezed. The results vary with where the narrowing occurs. However, typical symptoms include a drop in endurance for walking or other activities, pain from standing too long and numbness, tingling and weakness in the arms and legs. In rare cases, patients may experience reduced bowel and bladder control. Often, spinal stenosis comes with aging. Obesity, poor posture and high impact sports also may cause it. In most situations, treatment is simple: rest, physical therapy, over-the-counter pain relievers and steroid injections. If needed, surgeons will widen the spinal canal to relieve pressure on the cord and nerves.