Background The toxicity of styrene on the peripheral nervous system is still debated. Cases The paper presents two cases of peripheral sensorimotor neuropathy in styrene-exposed workers. Exposure, evaluated by biological monitoring, ranged between 100 and 150% of the current limits proposed by the American Conference of Governmental Industrial Hygienists (ACGM). The subjects complained of leg weakness and numbness, cramps, and paresthesia. Electrophysiology revealed a moderate peripheral sensorimotor neuropathy of a demyelinating type. Color-vision testing showed a subclinical deficit. Common inherited and acquired causes of peripheral neuropathy and dyschromatopsia other than styrene were ruled out by personal history, medical examination, laboratory data, and chest X-ray. Conclusions The results suggest that long-term occupational exposure to environmental levels of styrene that are equal, or slightly above, the ACGM limits can induce a clinical form of peripheral neuropathy and a subclinical impairment of color vision. As a consequence, a careful reappraisal of the real preventive meaning of the current ACGM occupational limit for styrene, at least on an individual basis, is needed.
|Anno di pubblicazione:||1995|
|Titolo:||Peripheral neuropathy in styrene-exposed workers|
|Autori:||Gobba F; Cavalleri F; Bontadi D; Torri P; Dainese R|
|Appare nelle tipologie:||Articolo su rivista|
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