Purpura - 紫癜
应排除涉及血管炎的其他全身性疾病（自身免疫性疾病）。
Purpura annularis telangiectodes
relevance score : -100.0%
ReferencesActinic purpura 是指血液渗入皮肤真皮层所导致的情况。其发生主要是因为皮肤变薄、血管脆弱，尤其常见于长期日晒的老年人。
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
大多数紫癜约在 7 天内自行消退。若紫癜在无明显诱因的情况下反复出现，应就医并进行血液检查，以排查凝血功能障碍。