Intense itchy legs and shaky hands!?

[Shankirlew]

This has been going on for a long time. I have experience itchy legs whenever I am walking or running, it's so bad that I have to stop and itch, and I get these red marks all over my legs. Today, I was walking and had an itch so intense I nearly cried, I nearly clawed my skin off it was that bad. And it would not stop for ages, even when I stopped walking, I also noticed my hands shaking and I literally broke a nail or two itching my legs. I don't know what to do anymore because I don't know what it is. It happens to me a lot, and sometimes in afraid to walk long distances because I know it'll probably start up. Even when I go to the gym and I go on the treadmill, I get the itching all over my legs and I can't continue.


Help me? What is it and what should I do.