其初期的病灶为紫斑性丘疹，进而形成表浅之溃疡，而后形成不规则状萎缩性疤痕。

The primary lesions consist of purpuric papules which undergo superficial ulceration, followed by the development of irregular atrophic scars.

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皮肤过敏往往表现在局部皮肤瘙痒、烧灼、起红斑、脱皮 或起丘疹、水泡以及脓性分泌物，重者形成溃疡。

Skin allergies are often manifested in the local skin itching, burning, from erythema, peeling, or from papules, vesicles, and purulent discharge, severe cases, the formation of ulcers.

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