The pain is felt
in the lower back, buttock, and/or various parts of the leg and foot.
In addition to pain, which is sometimes severe, there may be numbness, muscular weakness, and difficulty in moving or controlling the leg. Typically, the symptoms are only felt on one side of the body”. Taken from http://en.wikipedia.org/wiki/Sciatica
Treatment includes
Physical therapy. If you have a herniated disk, physical therapy can play a vital role in your recovery.