Abstract
19 adults were patch tested to urushiol, the allergen in poison ivy/oak, to determine their sensitivity to this allergen after working in a cashew nut shell oil (CNSO) processing plant. The cashew nut tree and poison ivy/oak are in the same botanical family, Anacardiaceae, and they share similar chemicals which cause allergic contact dermatitis. 13 of the 19 workers had a preemployment history of poison ivy sensitivity, with 10 developing CNSO dermatitis. After working in this factory for several months, 9 of the 13 noticed a decreased sensitivity or no sensitivity to poison ivy/oak. When tested to urushiol extract, only 3 reacted positively, 2 minimally. These results imply that hyposensitization to poison ivy/oak occurred in these employees after development of hardening to cashew nut shell oil.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 274-279 |
| Number of pages | 6 |
| Journal | Contact Dermatitis |
| Volume | 20 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 1989 |
All Science Journal Classification (ASJC) codes
- Immunology and Allergy
- Dermatology
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