It's a grey zone. SRS clearly appears to be deductible whereas FFS and even breast augmentation could be considered "cosmetic." I plan on getting letters from my psychiatrist, endo, and surgeon stating that I received these treatments as part of my ongoing treatment for "GID," or whatever they would like to call it. I'm tempted to lump electrolysis/laser costs in there too.
I think the smartest thing to do is to document and deduct everything you can, then produce that documentation when and if they ask for it. The worst thing that would happen is that you would be liable for the taxes you didn't pay. The best would be that they never bother to audit you. If they do try to make you pay, appeal and see if you can make yours the landmark case. That's my plan.
For the record, I have no problem with paying taxes but these are legitimate medical expenses, as far as I'm concerned.