Dr. I am suffering from pain in my leg just below knee at the back side (calves). After every 8 or9 days it start and when I take medicine it gets cure. I think it occur in nerves of my leg. I have shown to Dr. Many times but after taking medicine it is cured. Can you tell me why it is occurring again and again. What medicine should I take for it to cure permanently. I want to get out of this. This very painful even I can not sleep at night.