my baby is 20 months old she is having rashes on his legs

A. Hello ma’am See I’m not very sure what kind of rash is your child is having because you haven’t posted a picture or anything else you can just advise you to start applying Cetaphil lotion twice a day for a week and monitor them when if the rashes subside and do not reappear then very well and good otherwise just consult your paediatrician ones