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Vibrating hand tools can cause vibration syndrome, a condition also known as vibration white finger and Raynaud's phenomenon. Vibration syndrome affects circulation and nerves in the fingers. The signs and symptoms include numbness, pain, and blanching (turning pale and ashen). Of particular concern is evidence of advanced stages of vibration syndrome after exposures as short as one year. National Institute for Occupational Safety and Health (NIOSH) recommends that jobs be redesigned to minimize the use of vibrating hand tools and that powered hand tools be redesigned to minimize vibration. Where jobs cannot be redesigned to eliminate vibrating tools such as pneumatic hammers, gasoline chain saws, and other powered hand tools, engineering controls, work practices, and administrative controls should be employed to minimize exposure.
- NIOSH bulletin

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