I'd noticed a blue grey patch at the top of LOs bum a few times (mostly when I give her a bath, otherwise she's got a diaper on). We asked the pediatrician today at her 4 month appointment, and she said its a Mongolian spot! I'd googled before and thought maybe that was what it was, but wasn't sure because its usually found in certain ethnicites. DH and I are both 100% Caucasian. LO is very fair with red hair!

Any other Caucasian babies have Mongolian spots?