RE: HELP! Poop burning skin off her butt!
Neosporin sensitivities are very common. We see adults in clinic all the time with sores that don't heal, and it's actually a Neosporin reaction. So I'd avoid that if you can.
Jonathan's worst diaper rashes have been from toxic stomach bug poop.
Baking soda soaks, followed by hairdryer on low until the skin is completely dry. Then slather on Desitin - paint the whole area white with no skin showing through. Eileen (mudder17) has a mixture of triple paste, Mylanta and something else that I hear works wonders - search this forum, I'm sure you'll find it, you could use that instead. Naked time when you can.
Katie, Mom to two boys
Retraining my dopamine circuits thanks to David Kessler, MD.
Jonathan: Halloween 2004
Alex: A smidge past Groundhog Day 2007