Cow’s milk

Babies and small children are most frequently affected by a cow's milk allergy. 2-3% of infants and young children suffer from it, making it one of the most widespread childhood allergies. However, by the time they turn 3 years old, 90% of children outgrow the disease, making it considerably less prevalent in adulthood. Both IgE and non-IgE types of a cow's milk allergy are possible, although IgE cow milk allergies are the most prevalent and may also be the most dangerous.

When consuming cow's milk, children or adults with an IgE allergy frequently experience a response within 5–30 minutes. Swelling, rashes, hives, vomiting, and, in rare instances, anaphylaxis are among the symptoms they suffer. Non-IgE allergies typically cause inflammation of the gut wall in addition to additional gastrointestinal symptoms like vomiting, diarrhea, or constipation. It might be challenging to diagnose a milk allergy that is non-IgE. This is due to the fact that there is sometimes no blood test for intolerance but the symptoms may indicate one. Cow's milk and items containing it may need to be eliminated from the diets of nursing moms of infants with allergies. For infants who are not breastfed, a medical practitioner will suggest an appropriate formula other than one based on cow's milk.