Suggest Treatment For Numbness And Weakness In Leg

Hi, for 5 years once a year, always in summer, I don't know why, I Have this problem with my right leg, It goes numb and weak, I have to drag my leg, and it lasts 2 or 3 weeks. I had a Cat scan last year, and I guess 2 discs are degenerating a but the doctor said its not too bad, just live with it, but I can't just live with it, its controlling my life, and I can't stand it any more, what can I do, and what can I take to aliviate my problem? I just want to say that I am 40 years old.
Thank you