[New method of diagnosis of drug hypersensitivity of the delayed type--the scarificaiton-film test].

An original method for diagnosis of drug allergy, i.e. a scarification-film test (SFT) in 2 variants has been worked out for the first itme on the basis of examination of 241 persons and is recommended for use. 10 mm parallel scarifications with intervals of 3-4 mm between them were made on the epidermis of the antibrachial flexor and the following agents were applied to them: 1) a film-forming aerosol composition with medicines (tetracycline)--the 1st variant of SFT. (2) powder or solutions of medicines (antibiotics, sulfanylamides, vitamins, etc.) covered with a film-forming ocmposition without any medicine--the 2nd variant of SFT, 3) film-forming aerosol composition without any medicine-control of both variants out of 46 patients with professional dermatosis and in 10 (7.8 per cent) out of 127 practically healthy persons with latent sensitization (workers of pharmaceutical factories) being in contact with tetracycline. Hypersensitivity of the delay type to benzylpenicillin, streptomycin, sulfanylamides and other medicines was found in 54 79.4 per cent) out of 68 patients with drug allergy of professional and non-professional etiology. The method was shown to be highly sensitive, handy, simple and safe, which provided its recommendation for the use in wide clinical practice for diagnosis of drug allergy of the retarded type which developed because of drug use or professional contact.