A needle to the sciatic nerve usually feels like pain, numbness and weakness. The sciatic nerve is located at the back of the lower limbs and is the longest and thickest nerve in the body. After a needle is stuck to the sciatic nerve, there is usually pain, numbness, weakness and other sensations. Pain can be manifested as radiating tingling or severe pain, numbness of local skin or lower limb sensation, significant reduction of lower limb strength, and a feeling of weakness. If the needle to the sciatic nerve, at this time you need to immediately stop lower limb activities, bed rest, such as other discomfort, it is recommended to go to the hospital in a timely manner, under the guidance of the doctor for standardized treatment.