hmmm.. I didn't see any cysts or anything unusual on Eddie
Bedtime earlier might be a good idea. She bites at her back mostly when she is sitting with me. Some part of me thinks maybe it's yeast

but I don't know how she could get yeast problems because I keep my cages super clean and change their water twice a day, but who knows. Poor Button always has a problem with yeast
I might have to take her in to the vet for a check up but my husband thinks I just jump to conclusions.