When introducing new foods into your baby's diet, your digestive system is still immature, comes into contact with substances that are foreign to him. Sometimes the baby's body "is wrong" and confuses this food "strange" with something that is not good for him and then reacts to defend against such food. It is then said that a child develops a food allergy and should avoid eating to avoid unwell.

The foods that most commonly cause allergic problems in young children are milk, egg, gluten and fish, so caution should be taken when they are introduced. Food allergy is the most common type of allergy that occurs in infants and young children. It is estimated that about 5% of children under three suffer from an allergy to these characteristics.

The most common manifestations of food allergy are:

Skin problems like eczema, hives, redness or swelling of the lips.
Gastrointestinal problems such as diarrhea, vomiting, nausea or abdominal pain.
Breathing problems such as rhinitis, sneezing or nasal congestion.In all these cases should consult with your pediatrician to perform a proper diagnosis.
It has long been observed that allergy is a hereditary component, so that children with allergic immediate family, as parents or siblings have a higher risk also have allergies.

The best food to prevent the development of food allergy is breast milk and if it is not possible there are infant formulas in which the proteins have been previously pre-digested or hydrolyzed with the same enzymes involved in digestion and This will promote greater tolerance gets oral. The doctor shall, in each case the most appropriate infant formula to prevent the development of a possible food allergy.

It also increases the risk of developing allergies when introducing new foods other than milk before 4 months or when their introduction is delayed more than they should, after 7 months, so you should follow the guidelines that you mark the pediatrician the introduction of complementary feeding.