Hello. My daughter is 20 months old and for the past 9 months, we have struggled with diaper rashes. We can't connect it to anything in her diet. Her pediatrician has prescribed her 8 different cremes, all of which haven't done anything. He recently referred us to a dermatologist. Our first visit with her, she prescribed another creme and told me to use it for a week and come back for a follow up. I did. The creme did nothing. She put her on it for another week and said if it still didn't touch it, they would do a biopsy on it. Her bottom is now red, and we go back to the dermatologist tomorrow, and the creme has done nothing this past week. How will they do a biopsy on a diaper rash, and what are the possibly outcomes of the results?