[Development tendencies of the contact allergy].

The development tendencies of the contact allergy in the given catch-area in the years 1948-1977 are studied here by the help of a systematic examination of the dynamics concerning the hypersensitivity of the population. By means of patch tests applied to 15685 patients/6864 men and 8821 women/reactors are checked up towards 15 contact allergens/hexavalent and trivalent chromium, nickel, cobalt, procaine, paraphenylenediamine, neomycine, mercury bichloride, resorcinol, camomile, paraben mixture, formaldehyde, balsam of Peru, turpentine oil, rubber chemicals, and the connections between the percentage of the reactors and the alterations in the technology of the production as well as of the degree and effektiveness of the preventive measures and of the introduction of new remedies, cosmetics and necessaries for daily use are being determined. At the same time this study and the results achieved by analysis are the basis for preventive measures to be taken according to the characteristics of the contact allergens and in proportion to the possibility of taking such measures.