ive always had pretty bad skin- dry that is, with a tendency to develop fungus rashes- Dandruff
and dry skin are a result of that. i do use shampoos with Selenium Sulfide (selsun blue and generics etc.) but other than that i try hard to avoid getting any kind of chemicals or dyes on my skin, using odor and dye free soaps or detergents.
i dont believe these other conditions are directly related to the severely itching legs, but stress does seem to exacerbate all of them.