My 85 year old father says Scratchout is actually in Cleveland County....north of Emmas Baptist Church (which I believe is in Bradley County). Scratchout is (or is near) the Macadonia community. He says it is on Highway 189 north of Warren and east of New Edinburg.
Legend is that Scratchout got its name when an epidemic of itch swept through the community. I would guess this was early in the 1900s. As I heard of Scratchout growing up in Warren in the 1950s, I had the impression the itch episode had been many years before that.