For allergies are immune reactions (hypersensitivity reaction type I) in which a human body develop antibodies (immunoglobulin E) for specific proteins. The first type of hypersensitivity characterized by excessive activation of mast cells (mast cells) and basophils immunoglobulin E (IgE), passing into the general inflammation response, which may lead to different symptoms, as benign, such as runny nose, itching and life-threatening - anaphylactic shock, Quincke's edema. Allergies are frequently occurring diseases. Numerous data indicate the existence of a hereditary predisposition to allergies. Thus, parents who suffer from allergies are more at risk to have a child with the same pathology than healthy couples. However, strict compliance with hypersensitivity in relation to certain allergens between parents and children is not observed.