hand arm vibration syndrome(redirected from White Finger Syndrome)
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hand arm vibration syndrome (HAVS),
a disorder resulting from the use of hand-held vibration tools (for example, pneumatic drills, electric polishers, gas-powered chainsaws). Symptoms consist of: a circulatory disturbance, specifically vasospasm with finger blanching (that is, secondary Raynaud phenomenon); sensorineural changes (numbness and decreased sensitivity), principally limited to the fingers; and various skeletal abnormalities affecting the hand and forearm; may be unilateral or bilateral; initially episodic and triggered by cold exposure, but may ultimately progress and become constant; often carpal tunnel syndrome is associated.
Synonym(s): vibration syndrome
At risk patients Assembly line workers, grinders, mechanics, jack-hammer operators
Diagnosis Plethysmography to identify changes in digital blood flow