I am a healthy 27 year old male that has recently developed numbness and tingling in my right leg. It comes and goes and occurs about every 3 days. I don’t remember an activity in which I hurt my back or leg. I have had knee surgery (due to a deep cut and inspection for metal; I fell) on this leg 7-8 years ago. What are somethings that may cause this and when should I see a doctor. Thanks for you time and prompt response.
Brian