Clinical Features and Laboratory Findings of Vibration Disease: A Review of 300 Cases

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Abstract
The clinical features and laboratory findings of 300 inpatients with vibration disease before and after treatments were reviewed. Having used chain saws or pneumatic hammers for a long period, the patients were afflicted with Raynaud''s phenomemon, numbness, pain or stiffness of fingers, pain of elbows and neck and stiffness of shoulders and lumbago. They had a high incidence of complaints due to CNS disorders, especially of the higher autonomic nervous system; i.e., headache (52.0%), palmar hyperhidrosis (70.0%), forgetfulness (78.2%), fatiguability (61.3%), tinnitus (41.8%), impotence (55.1%), etc. Laboratory findings of the autonomic nerve activity tests, EEG and audiograms also suggested the disorder of the CNS. Treatments for 3 mo. significantly improved the subjective symptoms and the objective findings (P < 0.05-0.001). Vibration disease should be considered as a systemic disease, including disorders of the CNS, especially of the higher autonomic nervous system, and disturbances of the peripheral functions.

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