Consistent evidence has been found on the relationship between food allergy (FA) and
atopic dermatitis (AD) in some children. Food sensitization can be often found in these patients.
Allergy should be confirmed, though, with a food challenge test (FC) before advising a restrictive
diet which could be harmful for the patient. Younger children with AD frequently show sensitization
to egg, milk or peanut, while older ones and adults are more often sensitized to environmental
allergens such as house dust mites, moulds, animal dander or pollens. It is well known that a barrier
disturbance plays a main role in the development of sensitization and allergy. Therefore, due to the
early appearance of AD, preventive newborn skincare with emollients and early introduction of
food appear to be very important to determine food tolerance.