M.Y.
My daughter has only woken up with this once. But I was terrified! She woke up screaming at about three in the morning telling me that her leg hurt. I tried to get her to stand and walk down the hallway to me, but she would not move from her bed. When I went to her room and tried to get her to move her leg or stand she screamed louder. She was shaking all over and then her breathing became strange. I grabbed her jumped in the car and took her to the emergency room. By the time the Doctor came in to look at her she was jumping and running and laughing like nothing had happened. He gave her some motrin and sent us home. He said that it is very common for kids at this age...my daughter was three....to have leg cramps or "growing pains". He said they can be excuriatingly (sp?) painful for our little ones and that we should use motrin to control the pain and try to make them as comfortable as possible until the pain subsides. Hope this helps!