Raynaud's Phenomenon Johns Hopkins Medicine Vibration, the Law and Trigger Time WA Management Permanent Impairment Is Assessed in Vibration White Finger Cases Vibration white finger hi res stock photography and images Alamy Vibration White Finger Kelvin Power Tools Blog Kelvin Power Tools Blog Raynaud's phenomenon is a condition where small blood vessels in the fingers and toes suddenly narrow in response to cold or stress. This causes the classic color changes: white (reduced blood flow),