Amazing! I have this condition too, and people always ask me if I hurt myself! Usually because I scratched my shoulder or neck and I look like I was whipped with a cat o' nine tails. Truly, it doesn't hurt, it takes almost no pressure to make my skin raised and red.

Mine has gotten better since I was in high school, but I've had it for at least 10 years. I wonder if it's still sensitive to make art on...I'll have to find some artistically inclined friends!