The modern way of life, the development of technology and civilization reflects on human health. Health is not only the absence of disease, but a set of psychological, physical, spiritual and mental conditions of a person that should be in balance. The human immune system is a system that protects against potentially harmful substances. If the immune system overreacts to otherwise harmless substances it is an allergy. Allergies are caused by allergens that are found everywhere. Allergens can enter the body in different ways. Allergens that cause the greatest number of allergies are pollen, dust mites and food. The body reacts to the allergen with the appearance of an allergic reaction. Appearance can be local or generalized. A generalized or anaphylactic reaction is most often caused by a sting, food and medication. This reaction is extremely dangerous as it can be fatal. Allergic diseases that impair an individual’s quality of life are allergic rhinitis, asthma and atopic dermatitis. Allergies are not curable, but medicine has greatly advanced and made allergic diseases easier. Primary prevention, education, medical treatment and specific immunotherapy are the only options for fighting allergies. We know that allergies are most common in childhood. Educators who carry out the upbringing and education of children of early and preschool age must be educated about the modern epidemic called allergies.