Biomedical subjects
Publications and source records attributed to R J Rycroft.
Six cases of contact dermatitis from a lip salve are described. Five were allergic to phenyl salicylate and one to geraniol in the fragrance. The dermatitis spread in a ring around the mouth. Phenyl salicylate has been removed from the formulation.
An epidemiological study has been made of virus warts on the hands of all workers in a large meat processing factory. The meat handled is pork and beef. A total of 1141 employees were examined, 687 of whom were constantly handling meat. The plant outline and the work of the 144 workers in the butchery section are described in detail. The prevalence of warts in meat handlers was 33.6-70.4% in different sections. The prevalence in non-meat handlers varied from 18.2% to 44.4%. Half of the employees with warts were unaware of them, particularly in regard to plane warts.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
During 1979 approximately 20% of 160 laboratory employees in an animal virus research institute had skin problems; in two-thirds of cases (14% of the total number of laboratory employees) the dermatoses were non-occupational in origin. Occupational contact dermatitis was irritant in nature rather than allergic. Only one active case of occupational allergic contact dermatitis was diagnosed. This investigation is reported as an example of the profile of skin disease in many places of work; it also demonstrates that most conditions can be managed by improving work practices.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Simultaneous investigation of the bacterial flora of a soluble oil in use as a metalworking fluid and of the skin of machine operatives exposed to that soluble oil did not support the hypothesis that bacteria in soluble oil emulsions colonise the skin and either initiate or maintain the dermatitis associated with soluble oil exposure.
Contact dermatitis is reported in three out of four machine tool setters working with a grinding oil containing Epoxide 7 and a polyamine antirust additive. Positive patch test reactions to Epoxide 7 were obtained in two of three men and to the polyamine antirust additive in all three. Patch tests with the same dilutions of easch additive in controls were negative. Epoxide 7 has since been replaced in the formulation by a technical alternative.
Three independent cases are reported of allergic contact dermatitis from dipentene in the same brand of honing oil. The manufacturers have since removed dipentene from the formulation and replaced it with a technical alternative.
Dermatitis is reported from slimicides added to wood pulp slurry in a paper mill. The active constituents of the slimicides involved were bis-1,4-bromoacetoxy-2-butene and 2,3-dichloro-4-bromotetrahydrothiophene-1,1-dioxide. Wood pulp slimicides include many chemicals which are highly irritant and potentially sensitizing to the skin.
Two separate instances of dermatoses associated with low humidity in the working environment are reported. In such cases alternative explanations for the dermatoses are often considered and mistakenly adopted.
Explore the source record for details and available documents.