I've learned the hard way - it was a TSO who explained to me that that bad guys hide contraband in 'sensitive areas' and that's why you are trained to apply extra pressure or to try to insist on a visual, even if it requires pulling apart sterile dressings.
File a complaint? And get labelled a 'domestic troublemaker'?
LOL - and what exactly is going to be hidden behind bandages that is a threat to the plane? Are we still worried about a single knife taking down an entire airplane? What a country we live in.