Sciatica refers to pain in the passage and distribution region of the sciatica nerve. It's main manifestation is radiating pain in the lower back and legs. It usually radiates from the lumbar region on just one side from the lumbar region or buttock to the posterior side of the thigh, popliteal fossa, lateral side of the leg and lateral side of the dorsum of the foot.
Most sciatica is due to prolapse of a lumbar intervertebral disc.
As a Bi syndrome, it is fixed, severe and cold pain in the lumbar region and legs. Movement is limited when bending forward and backward as well as turning. It is aggravated on cloudy, rainy and cold days. Lingering soreness and weakness of the loins and knees, lassitude and listlessness. Pale with white coating.