Can a baby develop a dairy allergy later in life?

Anyone can develop an allergy at any age, although dairy allergy is most often diagnosed in children under age 3. Dairy allergy is different from lactose intolerance. Adults can have both lactose intolerance and dairy allergy, which could be one reason why some people confuse the two. read more

TL;DR: Yes. Egg allergy (or any food allergy) can develop at any point in life, including adulthood. Although egg allergy is more common in children, about 20% of children with egg allergy symptoms will continue to have egg allergy as an adult. read more