I have been itching, usually at night, on the top of my foot near my ankle. At first I can just see tiny bump of my skin raised. They are not bubbles and are not full of any kind of liquid or anything, they are just parts of my skin in a circular shape raised. When I scratch the bumps get bigger and now instead of 3 small circular bumps I would now have 1 large circular bump. I have to force myself to not scratch but it is so hard. Please Help!