What causes a baby to get blisters around the genital area? she's 11 mo old and just changed formulas.

There are various: causes...could be irritation from a change in acidity of her stool or urine, could be irritation from her diaper, could be a yeast infection or a bacterial skin infection. It would be best to have her examined by her doctor to properly diagnose and treat.

Rash: some times it is a reaction with the drying agents in the diaper sometimes it is a mild yeast infection----if you have recently changed diaper brands----go back to the old brand-----change diapers frequently---so infant does not stay in a wet diaper long----if rash persists---have your peds or family doctor see the rash