Definition: An acnelike eruption due to occupational contact, by inhalation or ingestion or through the skin, with certain chlorinated compounds (naphthalenes and diphenyls) used as insulators, insecticides, fungicides, and herbicides, including Agent Orange; keratinous plugs (comedones) form in the pilosebaceous orifices, and variously sized small papules (2 to 4 mm) develop.
Synonym(s): tar acne
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