I am a 57 yo male, in fair health. For the past couple of weeks, I have had moderate sharp pain in my right buttocks, radiating, laterally, down my right leg, sometimes going past the knee into the lower leg. The pain begins right above my hip joint. There is much tightness in what I can best describe as my "hamstring". Iceing and heat help, NSAIDS do not. Any thoughts as to what this may be? Thank You! Midcoast