The classification of HAVS has evolved over the years.

The classification of HAVS has evolved over the years. Use of the Taylor/ Pelmear scale has given way to the Stockholm Workshop scales.

The Stockholm Workshop scales take account of both sensorineural/ neurological symptoms (numbness and tingling in the fingers, with a reduced sense of touch, temperature and pain) and vascular symptoms (temporary reduction in blood circulation with blanching (a whitening, hence the vibration white finger description. The fingers will be numb when blanched but when blood circulation returns there may be throbbing, a redness and pain.

The HSE recommends assessment by the modified Stockholm Workshop scales as shown below (Guidance on Control of Vibration at Work Regulations 2005, HSE Publication L140, second edition 2019)

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