I'm reading Sharp Objects by Gillian Flynn and it looks to be excellent, but the reader has just found out (early on but spoiler alert) that the protagonist was a cutter as a child. I find it some- what difficult to read about this. Maybe it's because I did it once. In ninth grade, I carved my boyfriend's initials in my leg. By the time the scabs went away, he had too. Never did it again, wasn't tempted even. But it's there somewhere.
Is there something you can't bear to read about in novels? What fills you with terror that might not frighten other readers?