I have some itchy red spots on the soles of my feet.What can I do about it?

And I want to know what are they and the cause of it. Sometimes, my hand have them too but disappear after a while. My feet also Sweats quite a lot and I mostly discovered them after taking off my socks. 10 points for the best answer and I need to know what to do if u have some ideas. This is quite urgent as they itch a lot. Thanks!!!