结果皮肤扩张可造成局部皮肤的退行性损伤，甚至可引起无菌性炎症反应。但其局部免疫功能和抗感染能力未受到影响。

Results Regressive injury after topical skin expansion, aseptic inflammation could be induced, but there was no change about local immune function and anti-infective function.

youdao

一般认为其发生与遗传有关，并由皮肤非正常炎症反应造成。

It is thought to be genetic in origin and is a consequence of an abnormal inflammatory response in the skin.

youdao