STUDIES IN HYPERSENSITIVITY TO LIGHT .2. URTICARIA SOLARE (LAMBDA-LESS-THAN-3700)

[摘要] Further study on the case previously described. The allergic reactions were produced only by wavelengths shorter than about 3700A. This condition may be appropriately designated urticaria solare ([lambda] < 3700A), and should be regarded as a distinct etiological entity. Photosensitivity induced locally in normal skin by injn. of the patient''s serum (passive transfer), has the same wavelength limit, and it may be assumed that the light absorber is the same in the 2 cases. The light absorber is probably a protein and an antibody. Other cases are discussed.