I had blood work done in June and showed I had positive Ana but when I asked my doctor he said it could be a false positive and didn't really look into it. It didn't have a titer or say which disease it was positive for. Well last week I had more blood work done and showed positive scleroderma antibodies.I have been noticing the skin on my forearms to burn and get all splotchy. It kind of feels like an friction burn or a sunburn. Is this a sign of skin tightening?