[Specific IgE antibodies to Pityrosporum orbiculare in patients with atopic dermatitis].

By means of RAST investigations, we detected specific IgE antibodies against Pityrosporon orbiculare in the plasma of patients with atopic dermatitis. The patients suffering from the so-called head and neck dermatitis showed an average specific IgE antibody titer of RAST class 3, whereas in those with predominant involvement of the extremities we found an average antibody titer of RAST class 1.