This liquid water travels the earth constantly in the water cycle. Humans largely influence the water cycle today, be it quantitatively, by using large parts of the water available, or be it qualitatively, by changing the quality of water (e.g. pollution).
Pain due to nerve root compression has certain characteristics: * it tends to follow a dermatomal distribution * it may be accompanied by paresthesia (para, abnormal + aisthesis, sensation, abnormal sensation such as pricking or tingling; heightened sensitivity) or sensory loss in a dermatomal distribution
Nerve Compression Can Cause Sciatica. Compression of the sciatic nerve can cause any of the above-cited symptoms. Rarely is nerve damage permanent, and paralysis is seldom a danger since the spinal cord ends before the first lumbar vertebra.