If you suddenly start feeling pain in your lower back or hip that radiates to the back of your thigh and into your leg, you may have a protruding (herniated) disk in your spinal column that is pressing on the nerve roots in the lumbar spine. This condition is known as sciatica.
What causes sciatica?
Sciatica may feel like a bad leg cramp, with pain that is sharp ("knife-like"), or electrical. The cramp can last for weeks before it goes away. You may have pain, especially when you move, sneeze, or cough. You may also have weakness, "pins and needles" numbness, or a burning or tingling sensation down your leg.
You are most likely to get sciatica between the ages of 30 and 50 years. It may happen as a result of the general wear and tear of aging, plus any sudden pressure on the disks that cushion the bones (vertebrae) of your lower spine.