According to ADAM, "at some time, up to 40% of people experience pain, known as sciatica, which occurs when the sciatic nerve is trapped or inflamed. Learn more about back pain and sciatica causes, diagnosis, symptoms, and treatment. Here's a great overview of spine and low back problems from ReutersHealth.

Related Resources:

• More About Back Pain
• Guide to Low Back Pain
• The Back Pain Quiz
• An In-Depth Report: Back Pain and Sciatica