[Determining the occupational risk of skin diseases at the chemical plant "G. Genov" in Ruse].

A study is performed on workers from some productions of a Chemical Plant--H-acid, phthalic anhydride, ferrum-oxidate dyes and lacquers, in view of estimating the occupational risk of skin diseases. It is established that the highest occupational risk of skin diseases to which workers are exposed is in the production "H-acid"--25.8%, followed by "Phthalic anhydride"--13.2% and "Ferrum-oxidate dyes"--13%. The epicutaneous test shows positivation of the samples with phthalic-anhydride in 20% of the examined. In those engaged in the production of ferrum-oxidate dyes positive tests are observed in 23.2% of the examined; the highest relative part is taken by the potassium--56.2% and the sodium-bichromate--37.5%. The study of immunoglobulin A, M and G in workers from the lacqueur shop proved the irritating effect of the noxae, and established statistical significant higher values of immunoglobulin "A". The study of some functional investigations--pH and alkaline resistance of the skin give no significant deviations, save single cases. The authors consider the necessity of technological improvement of the production processes in the production "H-acid" where the workers are exposed to the highest occupational risk of skin diseases.