Abstract
Objective To investigate the morbility and epidemic characteristics of hair dye dermatitis in individuals who dyed their hair in Tianjin.Methods Questionnaires were distributed to the outpatients in the Gerneral Hospital of Tianjin Medical University,students and teachers in Tianjin Medical University,residents in the community and customers in barber shop from Aug.2007 to Mar.2008.The personal data including the methods and site of coloring hair and something correlated to hair dyes were investigated.Results A total of 597 cases with the history of coloring hair were enrolled in the study,including 485 women and 112 men,with mean age of 41 years (ranged from 16- 74years).Among 597 cases,69 cases had allergic reactions to hair dye,including 51 women and 18 men,with mean age of 44 years (ranged from 19-65 years).The median age of the first coloring hair was 40 years (ranged from 3-50 years).The comparison between the sites of coloring hair had no statistic significance (P ＞0.05),but there was a significant difference between black dyed hairs and col or dyed hairs (P ＜0.05).Conclusions People with black hair dye are prone to be allergic. Key words: Coloring hair; Dermatitis of hair dyes; Paraphenylenediamine
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