Relationship between intensities of skin test reactions to glass‐fibres and chemical irritants

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Abstract
A total of 98 workers at a glass-wool factory were patch tested with glass-fibers and 6 chemical irritants. A rubbing test with the fibers, a Trafuril test [for vascular response] and provocation of dermographism were also performed. The subjects with strong patch test reactions to 1 quality of fibers also reacted strongly to the other types of fibers but did not show an increased sensitivity to other tests. The subjects with intense skin reactions to rubbing with the fibers showed an increased skin reactivity to Trafuril. A tendency towards increased reactivity to the patch tests with fibers was found in persons with fair skin and blue eyes.