Basing on their own observations and analysis of data on the clinical picture and pathogenesis of atopic dermatitis, the authors suggest that four clinical forms of this condition be distinguished: erythematous squamous, erythematous squamous with lichen transformation, lichenoid, and prurigo-like. They consider it advisable that such terms as catarrhal exudative diathesis, childhood eczema, and diffuse neurodermatitis be used no more. Itching is suggested to be considered as a symptom and not cause of itching dermatoses.