Yesterday, I stood up and began to walk and stumbled because of numbness in my left foot. At first, I thought my foot may have fallen asleep from sitting a certain way. However, the numbness began on the top of my foot and continues about half way up my shin. I cannot lift my foot by my ankle or toes, so it drags when I walk unless I pick up my leg higher when I take a step. If I stretch my leg out front with my foot pointed out straight, I get severe shooting pain from the top of my foot up into my shin. It feels cold and numb to the touch still.