[The assessment of the occupational risk for skin diseases in workers at the Storgoziia Plant, Pleven].

A dermatological examination is performed on 95 workers (43 men and 52 women). In order to differentiate the type of contact dermatitis in connection with the expert examination of the skin changes in 20 workers was carried out epicutaneous test by specialized series PVH dust (pure), PVH--dust, containing dyes, by titanium oxide, with lead stearat and with paraloid, which is on acrylic base--all in concentrations 2% in carrier oil. It is established that in 26.

[Skin reactivity and the biological assessment of chromium exposure].

Subject to the examination are 140 workers from the plant for hydraulic products "Iv. Tenev", town of Yambol. The dermatological examination embraces 57 workers from shop 21, 49 from shop 24 and control group of 24 persons.

[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.

[Current immunologic and functional research on the skin in occupational contact dermatitis].

Immunological and functional studies are performed on workers engaged in the production of plastics, artificial fibres and dyes, in view of clarifying some mechanisms in the evolution of the contact dermatitis and the related with it early changes. The study establishes increased values of IgA and IgG in workers in contact with irritating substances and increased values of IgG in workers in contact with sensitizing substances. In the latter is registered a decrease in the active and the total rosettes.

[Quantitative determination of the irritating effect on human skin of butanol, octanol, acetaldehyde and crotonaldehyde].

A method was elaborated for quantitative assessment of the irritating effect of the solvents after a 24-hour contact with healthy subjects. The irritating effect of octanol is weaker, with statistical significance, than that of butanol. Croton aldehyde proved to be the strongest irritator.