Judy WJudy,
From my personal experience this is not related to CAH. My son now 9 almost never runs a fever. But I will say that when he was very young he ran very high when he did. Sometimes 106. But I was the same as a child. My personal feeling is that a fever is a sign of something going on like an infection. Does your granddaughter get fussy when she’s running a fever? Two thoughts come to mind.... teething or ear infection. I know many children who run fevers for both. I also know a few who’s children have had an ear infection and their child isn’t even fussy. Just a thought to consider. Good luck and keep us posted.
Judy W