Hand-arm vibration syndrome
Hand-arm vibration syndrome, or vibration white finger, is a complex condition associated with vibration exposure and the use of hand-held vibrating tools.
Symptoms include:
- white fingers
- sensory disturbances
- reduced hand dexterity
- diminished grip strenght
Additional symptoms:
- cold intolerance
- wrist and hand pain
- muscle cramps
Vibration exposure has a cummulative effect on both vessels and nerves.
The diagnosis of hand-arm vibration syndrome is based on a history of vibration exposure and presence of symptoms. The Stockholm workshop scales are widely used in assessing the severity of this condition in affected individuals.
Electrodiagnostic and vascular flow studies are helpful in excluding other etiologies such as an arterial thrombosis or peripherial nerve compression lesion, although these separate lesions may coexist.
Diagnosed early, this condition is reversible, in in case of long-term exposure, blanching of fingers may persist indefinitely despite avoidance of vibration exposure.
Prevention of hand-arm vibration syndrome includes:
- Use of well-padded antivibration gloves
- Frequent breaks from operatring vibratory machinery
Treatement is based on
- Interruption of exposure to vibration
- Discontinuation of smoking
- Oral vasodilators (calcium blockers)
- Limitation of cold exposure