Purpura - 紫癜
应排除其他涉及血管炎的全身性疾病（自身免疫性疾病）。
Purpura annularis telangiectodes（环形毛细血管扩张性紫癜）
relevance score : -100.0%
ReferencesActinic purpura 当血液渗入皮肤真皮层时，就会出现这种情况。这种情况的发生是因为皮肤变薄、血管脆弱，尤其在经常暴露于阳光的老年人中更为常见。
Actinic purpura results from the extravasation of blood into the dermis. This phenomenon is due to the skin atrophy and fragility of the blood vessels in elderly individuals, which is exacerbated by chronic sun exposure.
Actinic purpura results from the extravasation of blood into the dermis. This phenomenon is due to the skin atrophy and fragility of the blood vessels in elderly individuals, which is exacerbated by chronic sun exposure.
○ 治疗
大多数紫癜约 7 天后会自行消退。如果紫癜在无明显原因的情况下复发，建议就医并进行血液检查，以排查凝血障碍。