<s>[INST] 54 year old woman, first experienced a tingling feeling or electric shock feeling or a feeling as if I had been hit by a shot rubber band, followed by numbness in that spot 12 years ago while pregnant . Occurs in both thighs off and on - it went away for quite a while after pregnancy and then was back earlier this year and now is gone agian [/INST] Hi, This feeling of tingling and numbness along both thighs is due to pressure on a nerve near the pelvic bone close to the lower abdomen. This nerve runs down the front of the thigh. One gets a feeling of tingling and numbness on and off. This is known to start off in pregnancy when there is stretch of the abdomen wall and also of the pelvic ligaments which in turn stretches this nerve. You need to avoid wearing tight clothes, underclothes which can press upon the lower waist. If its disturbing then your doctor can prescribe certain medication effective for nerve pains. A local steroid injection is sometimes used if the condition is too troublesome. Take care. Hope I have answered your question. Let me know if I can assist you further.  </s>