Whether your baby is having these rashes due to
milk allergy or weather
allergy(hay fever),that can be confirmed after
skin ***** tests or blood test.If hay fever is suspected due to any allergen,be it pollen,molds or dust mites etc,it can be confirmed after these tests only.I am sending you a good link on milk allergy which you will find useful:
http://www.foodallergyinitiative.org/section_home.cfm?section_id=3&sub_section_id=3
Hope it helps.Take care and regards.