I am almost 60 and have hypertension which is controlled by medication. I find when I walk and stand a lot, like shopping, or sometimes walking my dogs, the skin on the front of my thighs goes numb. I am pre-diabetic but have never been diagnosed as diabetic. I m on a low carb diet, but i am concerned this is some type of diabetic nerve issue. When I get home and sit or get back in my car the feeling dissipates rapidly and doesn t come back. It may reoccur if I do the same type of thing again, but otherwise I am fine most of the time.