Does anyone have an allergy to caseine, the protein in milk?

My grown daughter does have an allergy to caseine and also has migraines. We discovered the allergy because anything with milk would make her sick when she was a baby — and it is relatively hard to stay away from milk when one is a baby. This is only the second time I’ve heard of it. My cousin’s daughter is mildly autistic, and gluten and caseine make her “stim.” She has to stay away from all wheat and dairy products. Migraines might also be a result of an allergy. Check out greatplains laboratories website. There is an 800 number that you can call to request further information..they could probably tell you. They deal with food allergies and special diets. Good luck!