I am female, 30y. There is an itch inside my left knee, inside the joint, not on the skin, and only in the left knee. It occurs mostly night, but also sometimes during the day when I sit or relax. It only goes away for a while when I overstrech my knee to the point where it hurts and it s driving me insane. Sometimes I have it for sevral days, sometimes not at all for weeks, and it seems to get worse when my leg feels warm. Might this be restles leg syndrome?