Hi. I Have Dry Skin. Over The Last 2-3 Years,

Hi. I have dry skin. Over the last 2-3 years, my skin started flaking, then mild peeling. Especially on the tips of my toes & under the nail. Some of my OLD scars on my shins are peeling, leaving raw, red spots that scab over. (like a brush burn). I frequently itch. When I do scratch, my skin turns ashy white and/or it peels. Sometimes the peeling is deep enough to bleed or scab over. Since last year, I have also been getting a red measle-like rash all over (not raised up) when I shower or I am exposed to heat.
Never mind. I didn't realize I had to pay for an answer. I will ask my PCP. I have an appointment in 2 weeks.