[Adverse reactions to immunotherapy in pediatric patients].

Background: Specific immunotherapy involves administration of allergenic extract in order to reach clinical tolerance of the causal allergens in patients with allergic conditions. When administered, it can provoke side effects.

Objective: To identify systemic reactions after specific immunotherapy administration.

[Quality of life in children with allergic rhinitis before and after being treated with specific immunotherapy (cases and controls)].

Background: Rhinitis is the most frequent allergic disease in children. Symptoms may affect importantly life quality. Measures to avoid allergens when possible and the use of drugs are an important part of the treatment; however, specific immunotherapy is the only treatment altering the natural course of the disease.

[Hypersensitivity detected by skin tests to food in allergic patients in the Hospital Infantil de México Federico Gómez].

Background: The prevalence of food allergy depends on the feeding practices of different parts of the world. Peanuts and nuts cause a great part of allergies in the United States; in Spain and Portugal are commonly due to fish, milk; in Italy seafood and mustard in France. In Mexico we don't know the frequency of food allergy and involved groups of age or specific foods.