Selected questionnaire methods studying the quality of life.

The scientific literature is full of numerous reports dealing with the quality of life of patients suffering from different diseases. The aim of the study is to present a set of questionnaires, which are used to study the quality of the patient's life, the questionnaires, which are the most popular in Poland and all over the world as well as those which concern the children's allergy. Increasingly, the research deals with the objective and subjective feelings of patients about their condition.