Sciatic nerve

Cleveland Clinic says the sciatic nerve is a long nerve in your lower body, the largest nerve you have, with one on each side. It says the nerve starts near the base of your spine in your lower back, passes through your pelvis and buttock, and runs down the back of each thigh and into your lower leg. The nerve plays a major role in how your lower body feels and moves. Irritation of this nerve is called sciatica. It connects the lumbar spine area to the hips and legs. Ask your clinician about any pain along the nerve. Read TENS for sciatica, knee and foot pain.