SCIATICA
The term "sciatica" is frequently interchanged with "back ache." Sciatica, on the other hand, is not merely a back problem. The sciatic nerve is the human body's longest and broadest nerve. It goes down the legs from the lower back to about below the knee, passing through the buttocks.
This nerve provides sensation to the skin of the foot and the majority of the lower leg and regulates various muscles in the lower legs. Sciatica is a sign of another disease involving the sciatic nerve, not a condition. According to some estimates, up to 40% of people will suffer with sciatica at some point throughout their lives.