Sciatica is the term given to pain down the leg, which is caused by irritation of the main nerve into the leg, the sciatic nerve. This pain tends to be caused where the nerves pass through and emerge from the lower bones of the spine (lumbar vertebrae).
The most common cause of true sciatica is a "slipped disc", which is also known as as a prolapsed intervertebral disc (PID) or a herniated nucleus pulposus.. The discs (or inter-vertebral discs) are the cushions which separate the bones of the spine (vertebrae).
CT (Computerised Tomography) or MRI (Magnetic Resonance Imaging) scan.
Fantastic new books!
Complementary and Alternative Medical Lab Testing is chock full of references for over 100 diseases.
Nutritional Genetics is also a referenced resource with sections on over 100 diseases.
Great Health Quotes has wonderful quotations about health, healing, disease, doctors, and medicine, and it's FREE.
A Brief Introduction to Naturopathy and Naturopathic Medicine describes the history and modalities. It's also FREE.