Livedo reticularis - 網狀青斑
網狀青斑 (Livedo reticularis) 是一種常見的皮膚表現，呈現斑駁的網狀血管圖案，表現為皮膚呈花邊狀的紫色變化。受冷可能會加重此情況，最常發生於下肢。變色是因為供應皮膚毛細血管的小動脈血流量減少所致，導致缺氧血液呈藍色。這可能與高血脂、微血管疾病、貧血、營養缺乏、免疫相關疾病（包括自身免疫疾病）以及某些藥物或毒素有關。
嚴重腎下主動脈狹窄所致的病變。
relevance score : -100.0%
ReferencesLivedo reticularis (LR) 是一種皮膚狀況，其特徵為暫時或持久、斑駁、呈紅藍至紫色的網狀圖案。此病主要影響中年女性，通常無症狀。另一方面，Livedo racemosa (LRC) 為較嚴重的形式，常與抗磷脂抗體症候群相關。
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.
