Atopic dermatitis and Sézary syndrome.

A patient with severe atopic dermatitis had pre-Sézary and Sézary syndromes. Although elevated serum IgE values in mycosis fungoides and Sézary syndrome are not infrequent, the direct sequential occurrence of atopic dermatitis and Sézary syndrome is uncommon. The clinical and laboratory changes we observed imply that the relationship of these disorders may be conditioned by changes in immunoresponsiveness.