Livedo reticularis - 网状青斑
网状青斑 (Livedo reticularis) 是一种常见的皮肤表现，特征为斑驳的网状血管图案，呈现为皮肤呈花边状的紫色变色。受冷可加重此症，常见于下肢。变色是由于供应皮肤毛细血管的小动脉血流量减少，导致脱氧血液呈蓝色所致。可能与高脂血症、微血管血液学异常或贫血、营养缺乏、免疫系统疾病（包括自身免疫性疾病）以及药物或毒素有关。
严重肾下主动脉狭窄所致的病变。
relevance score : -100.0%
ReferencesLivedo reticularis (LR) 是一种皮肤状况，其特征为暂时或持续的、呈斑驳的红蓝至紫色网状图案。主要见于中年女性，通常无症状。另一方面，livedo racemosa (LRC) 是一种更为严重的形式，常与抗磷脂抗体综合征有关。
Livedo reticularis (LR) is a cutaneous physical sign characterized by transient or persistent, blotchy, reddish-blue to purple, net-like cyanotic pattern. LR is a benign disorder affecting mainly middle-aged females, whereas livedo racemosa (LRC) is pathologic, commonly associated with antiphospholipid antibody syndrome.
Livedo reticularis (LR) is a cutaneous physical sign characterized by transient or persistent, blotchy, reddish-blue to purple, net-like cyanotic pattern. LR is a benign disorder affecting mainly middle-aged females, whereas livedo racemosa (LRC) is pathologic, commonly associated with antiphospholipid antibody syndrome.
