Sciatica is a condition whereby the sciatic nerve, running from the base of the spine down the back of the leg, is irritated or affected by inflammation of the surrounding soft tissues.
This may cause pain, pins & needles, tingling, numbness or burning sensations anywhere along the path of the nerve.
It can be isolated to certain points such as the buttocks, knee area, or calf; or it may be apparent along the entire length of the nerve from the lower back to the feet and toes.
Pain is caused when the sciatic nerve is irritated, scraped, twisted, stretched or pinched as it exits the spine.