Komura Y, Yoshida H, Nagata C, Fujita S, Mirbod S M, Inaba R, Iwata H
Department of Hygiene, Gifu University School of Medicine.
Nihon Koshu Eisei Zasshi. 1992 Jul;39(7):421-7.
Raynaud's phenomenon (RP) which is the episodic and reversible vascular spasm of the extremities can be elicited by cold or emotional changes. RP has been classified into two groups. One is primary Raynaud's phenomenon (PRP) with no identifiable underlying disease and/or cause, and the other is the secondary form of RP (Raynaud's syndrome) with underlying disease and/or cause, e.g., collagen disease, trauma, vibration from vibrating tools, etc. In the present study using this definition of RP the prevalences of RP were studied in general populations in a mountain village "T" and in a town "K" located in a plain area in Gifu prefecture, Japan. The prevalences of RP in T Village were 8.0% (25/314) in males and 3.5% (16/454) in females, and in K Town 2.7% (7/259) in males and 3.2% (21/657) in females. In 52% of the male cases in T Village it was estimated that the exposure to vibration from vibrating tools was the cause of RP. In K Town no male cases of RP were induced by vibration. Exposure to vibration may be one of the important factors when prevalences of RP are investigated in various areas. There were no significant differences between the two areas in the prevalences of PRP (T Village: male 2.9%, female 3.1%; K Town: male 2.7%, female 2.9%). The annual mean air temperature was usually 5-6 degrees C lower in T Village than that in K Town. From the results of this study the differences in the mean air temperature did not appear to have a significant influence on the prevalence of PRP in each area.
雷诺现象（RP）是一种四肢发作性且可逆的血管痉挛，可由寒冷或情绪变化诱发。RP已被分为两组。一组是原发性雷诺现象（PRP），无明确的潜在疾病和/或病因；另一组是继发性RP（雷诺综合征），有潜在疾病和/或病因，如胶原病、创伤、振动工具引起的振动等。在本研究中，采用这种RP的定义，对日本岐阜县平原地区一个山村“T”和一个城镇“K”的普通人群中RP的患病率进行了研究。T村男性RP患病率为8.0%（25/314），女性为3.5%（16/454）；K镇男性为2.7%（7/259），女性为3.2%（21/657）。在T村52%的男性病例中，估计振动工具引起的振动是RP的病因。在K镇，没有男性RP病例是由振动诱发的。在调查不同地区RP患病率时，接触振动可能是一个重要因素。两个地区的PRP患病率没有显著差异（T村：男性2.9%，女性3.1%；K镇：男性2.7%，女性2.9%）。T村的年平均气温通常比K镇低5 - 6摄氏度。从本研究结果来看，平均气温的差异似乎对每个地区PRP的患病率没有显著影响。
