My daughters sensitivity wasn’t apparent until after a year old. We tried switching to dairy milk and no matter how slow we did it she started puking again and went from sleeping through every night to never sleeping through but waking up crying inconsolably for hrs wanting more milk! This explains a little better why her reflux was so bad until about 7 months. I suspect she may grow out of it because we did have a few 7-12 months old seemingly without issue like she got used to it. For now she is on flax milk and we avoid most dairy foods.

My daughter was presumably born with a dairy allergy but was continually misdiagnosed until she was 9 months. She always spit up her food, breast milk and formula ( primarily bm), she didn't get better with any meds they gave her for acid reflux. She screamed and was clearly uncomfortable until she was about six months. She had horrible eczema (the worst a dermatologist had seen on a baby) she would itch her eczema to the point where it bled and nothing helped it. looking back she had swollen eyes from basically the beginning. I took her to countless doctors to try to find out what was wrong.

She had an ear infection and I took her to see a different doctor in the practice. She suggested soy formula and a dairy free diet for me since I was breast feeding too after looking at my daughter's eczema that weekend. It seemed like the soy formula helped overnight. After that I was referred to an allergist who did blood work to confirm that kiddo had a dairy allergy.