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KMID : 0363219740120010009
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Korean Journal of Dermatology
1974 Volume.12 No. 1 p.9 ~ p.12
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Patch Test to Silk Industry Workers
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Abstract
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Hand dermatitis of silk industry workers had been a troublesome problem for a long time.
It was said the cause was due to toxic reaction by denatured pupae and physical reaction from high water temperature.
During August and September 1973, patch. test was performed with pupa and cocoon to 680 workers in 4 separate silk factories in order to persue the factors which may cause their hand dermatitis.
Among 475 workers who had performed first patch test, only 12 workers in one of four factories showed positive reaction in pupa and we came to know that only that factory had used formalin in order to protect denaturation of pupae and cocoons.
Second patch test with pupa and 1% formalin was repeated to 130 subjects including 6 of 12 positive cases in the first patch test. Five Subjects showed positive reaction in pupa, also 5 in 1% formalin and 2 of them showed positive reaction in both pupa and 1% formalin.
In the second patch test, 3 of 6 who had been positive in pupa at first patch test were positive at pupa.
It seemed to be that toxic or allergic theery is not enough to explain clearly the cause of hand dermatitis in silk industry workers.
Further study is necessary to elucidate how the silk fiber, water temperature and parasites in the pupa and c^coon contribute to the hand dermmatitis.
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