Atopic dermatitis is one of the most prevalent chronic inflammatory skin diseases, which can vastly influence the patients quality of life. Objective assessment of severity is required to select adequate therapy and evaluate its effectiveness. Heterogeneous clinical manifestations with greatly varying severity make it difficult to assess the severity of atopic dermatitis. More than twenty methods are developed for the assessment of this diseases severity. SCORAD, oSCORAD and EASI are the most elementary and reliable methods allowing to define the severity of atopic dermatitis relatively quickly and accurately. Each of these three methods has its own particularities, that could be advantages or disadvantages depending on circumstances.