no you're not alone this is my main one right now. I too am a child sex abuse survivor and in part do this to get rid of the left over dirt, even though logically I know those skin cells that had been touched so many years ago have "sloffed off" in the form of dry skin, dandruff and so on.

And thank you for being brave and confirming for me that I was'nt the only one that does these things.