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.
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.
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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