Allergic diseases have a developmental process, clinically known as the allergy march. This means that the manifestations of allergic diseases change in stages as the child grows older, with different allergic symptoms persisting in various systems. Clinical studies have shown that the risk of developing allergic rhinitis and asthma later in life in children with persistent food allergy (more than 1 year) is 3.4 and 5.5 times higher than in children with temporary food allergy, respectively. Among milk-allergic children up to 10 years of age, 41% suffered from asthma and 31% from allergic rhinitis or conjunctivitis. Therefore, food allergy is a risk factor for other allergic diseases. Early detection and interruption of food allergy can reduce the risk of other serious allergic diseases later in life.