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KMID : 0371019970300010145
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Journal of Preventive Medicine and Public Health
1997 Volume.30 No. 1 p.145 ~ p.156
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Phototoxic Dermatosis among Coal-tar Pitch Workers
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Jung Cheol
Lim Hyun-Sul
Kim Doo-Hee
Sung Yeol-Oh
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Abstract
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Interview survey and dermatological examination have been performed to investigate the health problems of workers continuously exposed to coal-tar pitch. The phototoxicity of coal-tar pitch was confirmed by the photopatch tests for pix healthy adults. The main results are followings;
1. There was no special history of allergic diseases in both the exposed and non-exposed group.
2. The frequency of the phototoxic dermatosis and the coal-tar acne in the exposed group was significantly greater(p(O.05) than that of the control group; In the exposed group, the phototoxic dermatosis and the coal-tar acne were observed in nine workers(90%) and seven workers(70%), respectively. However, those diseases were not observed in the control group.
3. Five results(83%) were positive to the photopatch test for coal-tar pitch 48 hours after UVA irradiation. But the lesion was subsiding 72 hours after UVA irradiation.
4. Malignant cancers were not reported among workers ever exposed to coal-tar pitch.
In conclusion, it appears that workers exposed to coal-tar pitch hive high risks of phototoxic dermatosis and coal-tar acne. A health policy should be provided to prevent phototoxic dermatosis among coal-tar pitch workers. More studies are required to determine malignancy.
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KEYWORD
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Coal-tar pitch, Phototoxicity, Coal-tar acne, Photopatch test
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