DERMATITIS VENENATA FROM ENGLISH IVY (HEDERA HELIX)

Abstract
Although dermatitis from common English ivy, Hedera helix, is known to botanists,1 it is not familiar to dermatologists. This common ornamental plant can cause dermatitis, not only from its leaves and stems but also from its roots. It is important to emphasize that the dermatitis clinically may resemble that from poison ivy. There is no botanical relationship between English ivy, which belongs to the ginseng family, Araliaceae, and poison ivy, of the famed cashew family, Anacardiaceae. Sensitivity to English ivy is commoner than one supposes, since it is generally assumed that all plant dermatitis acquired out of doors is due usually to poison ivy. One of us (H.R.M.), in his lectures to garden clubs, has heard of instances of dermatitis from English ivy and even disbelief of physicians in this. It is apparent that proof could be established easily by testing to this type of ivy. An engineer, age

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