It is possible for children who are highly reactive to urushiol to grow into adults who are barely sensitive to poison ivy, oak, or sumac, regardless of how many times they have been exposed to the plant oil.
The itching and discomfort of poison ivy, oak, and sumac rashes can disrupt sleep, make a child irritable and anxious, and pose a major distraction to schoolwork and other tasks that require concentration.
Common culprits include poison ivy, poison oak, and poison sumac; fragrances and preservatives in cosmetics and personal care products, such latex items as gloves and condoms; and formaldehyde.
Thus the protoand per-salts of iron, as well as the protoand per-salts of tin, including also a large variety of tannin, sumac, divi-divi, chestnut, valonia, the acacias (Areca Catechu and Acacia Catechu from India), from which are obtained cutch and gambier, &c., are no longer used solely as mordants or tinctorial matters, but mainly to serve the object of converting the silk into a greatly-expanded fibre, consisting of a conglomeration of more or less of these substances."
Laurel, rhododendron, and whortleberry are common shrubs in the mountain districts, and sumac, hazel, sassafras and elder are quite widely distributed elsewhere.
Among indigenous fruit-bearing trees, shrubs and vines the state has the bird cherry, black cherry, blueberry, cranberry, raspberry, blackberry, gooseberry, strawberry, grape and black currant; and conspicuous among a very great variety of shrubs and flowering plants are the rose, dogwood, laurel, sumac, holly, winterberry, trilliums, anemones, arbutuses, violets, azaleas, eglantine, clematis, blue gentians, orange lilies, orchids, asters and golden rod.
Pushing through some sumac that she thought bordered the clearing where the building stood, she squinted up at the sun.
Those are sumac bushes.
She found a hand saw in the shed and cut down several small trees and some sumac bushes.
She dropped the sumac bush.