Over the last few months I've noticed that my skin will break out with a rash. If I have a pimple or bug bite that I have scratched at all it will break out with a rash on top of the bite. So, now I have itchy bumps on top of itchy bumps. What can caused an increased skin sensitivity all over my body? I've always had sensitive skin, but it's worse now. Is it that I'm getting older??