雷诺氏现象的特点是肢端血管挛缩,其后出现手指苍白、紫绀和红斑的一种疾病.一般暴露在寒冷或情绪刺激引起发作并自然缓解.然而,某些病人可发生功能废用或引起指趾的溃疡或坏死.至今本病的疗效不佳,常受不利副作用的限制.硝苯吡啶(Nifedipine又名Adalat,商品名 Raynaud’s phenomenon is characterized by extremity vascular contractures followed by a disease of pale, cyanotic and erythema of the fingers. General exposure to cold or emotional irritation causes spontaneous seizures and spontaneous remissions. However, some patients may have functional disuse or cause Toe ulcers or necrosis so far the poor efficacy of this disease, often adversely affected by adverse side effects. Nifedipine (Nifedipine also known as Adalat, trade name