I often suffer from extremely hot, and very red hands, but it can happen at anytime for no particular reason. Do you have any ideas as to why?

Raymauds. Raynaud's phenomenon (rp) is a condition resulting in a particular series of discolorations of the fingers and/or the toes after exposure to changes in temperature (cold or hot) or emotional events. Skin discoloration occurs because an abnormal spasm of the blood vessels causes a diminished blood supply to the local tissues.