Jo Seong Jin, Shin Hyoseung, Paik Seung Hwan, Choi Jae Woo, Lee Jong Hee, Cho Soyun, Kwon Ohsang
Department of Dermatology, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea. ; Department of Dermatology, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.
Department of Dermatology, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.
Ann Dermatol. 2013 Nov;25(4):401-4. doi: 10.5021/ad.2013.25.4.401. Epub 2013 Nov 30.
Hair graying is considered as a part of normal ageing process. Nonetheless, this process raises a significant cosmetic concern, especially among ethnic Korean elderly whose baseline hair color is black. For this reason, Korean elderly dye their hair with frequency despite the risk of dermatologic problems such as allergic contact dermatitis.
In this study, the authors investigate the prevalence and pattern of hair dyeing and its relation with scalp diseases in Korea.
Six hundred twenty subjects (330 men and 290 women) with graying hair were given a questionnaire survery and underwent a physical examination.
Of the 620 total, 272 subjects (43.9%) dyed their hair. Hair dyeing was significantly more frequent among women than among men (p<0.001). Subjects from 50 to 69 years of age showed higher prevalence of hair dyeing when compared to either younger or older groups. Subjective self-assessment of the extent of hair graying was associated with increased prevalence of hair dyeing, that is, individuals who feel graying has advanced by more than 20% of the overall hair were much more likely to dye their hair (p<0.001). Hair dyeing did not correlate with either alopecia or scalp disease.
Our survey has found that the prevalence of hair dyeing is higher among Korean women than men. People in their fifties and sixties and people with more than 20% extent of grayness were more likely to dye their hair than otherwise. Hair dyeing was not associated with any increase in the prevalence of scalp diseases.
头发变白被认为是正常衰老过程的一部分。尽管如此，这一过程引发了重大的美容问题，尤其是在基线发色为黑色的韩国老年人中。因此，韩国老年人不顾诸如过敏性接触性皮炎等皮肤病风险频繁染发。
在本研究中，作者调查了韩国染发的患病率和模式及其与头皮疾病的关系。
对620名头发花白的受试者（330名男性和290名女性）进行问卷调查并进行体格检查。
在620名受试者中，272名（43.9%）染发。女性染发的频率明显高于男性（p<0.001）。与较年轻或较年长的组相比，50至69岁的受试者染发患病率更高。对头发变白程度的主观自我评估与染发患病率增加相关，即，感觉白发超过整体头发20%的个体染发可能性要高得多（p<0.001）。染发与脱发或头皮疾病均无关联。
我们的调查发现，韩国女性染发的患病率高于男性。五十多岁和六十多岁的人以及白发程度超过20%的人比其他人更有可能染发。染发与头皮疾病患病率的任何增加均无关联。
