Hi everyone, so my mother has been suffering from this problem in her forearms, they itch and she feels as if there're ants running all over them, it's been almost two years now and we still don't know the cause, I took her to a physician and he claimed it's due to high cholesterol levels, she's on a diet now but she still has it from time to time, also there's a large light brown 'blot' on both them, it looks like dirt on them.
Thank you in advance.