雷诺氏现象以遇冷或紧张后突然发生手指苍白或紫绀为特征,常累及一个或几个手指,可不对称。当刺激存在时,缺血症状如感觉异常和麻木常持续存在,继而手指充血, Raynaud’s phenomenon is characterized by the sudden appearance of pale or cyanotic fingers in the event of cold or tension, often involving one or more fingers, which may be asymmetrical. When the stimulus exists, the symptoms of ischemia, such as sensory abnormalities and numbness often persist, followed by finger congestion,