他们导致血管扩张，使皮肤变为红色，肿起，痕痒和剌痛，譬如可见的皮炎或湿疹。

They cause blood vessels to widen, resulting in the affected area of skin becoming red, swollen, itchy and painful, such as is seen in dermatitis or eczema.

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“但愿我能够安慰他，”小树心里想：“但是我身上的刺只会更加的剌痛他。”这人踉踉跄跄地走开，再也没有回来。

"How I wish I could comfort him", thought the little bush, "but my thorns will only piece him more." the man stumbled off and did not return.

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热有时使皮肤剌生上痛的疹子。

Heat sometimes causes a prickly rash on the skin.

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