Professional contact dermatitis is a common problem, and hairdressing is one of the most often affected occupations. Baggers are soaked for a long time, and allergens may be existed in hair dye, bleaching and hairdressing products and protective gloves. It is estimated that the incidence of hand eczema (HE) of hairdressers is more than twice that of ordinary people, and its cumulative prevalence rate is between 29.1%and 42.3%.
Because professional eczema (OHE) usually maintains a negative impact on work. Most hairdressers showed earlier HE, and it is not surprising that the high dropout rate related to the HE is high in HE. According to research reports, almost half of the hairdressers have left the industry, and 23.1%of people reported that HE was the reason for their departure. At present, we have a poor understanding of the long -term process of the hairdresser HE, and we do not know that primary prevention needs to be carried out in the later stage of the hairdresser’s career.
We put forward a study of the expected queue of well -established barber established in 2009. These hairdressers graduated from 1985 to 2007 and conducted a follow -up investigation in 2020. We evaluated the development of HE’s prevalence and incidence and its related risk factors, as well as the prognosis of hairdressers in the HE baseline.
Methods: Research on all hairdressers who graduated from Denmark’s Hairdressing Vocational School from 1985-2007. A self -filled questionnaire was issued in 2009, and a follow -up survey was conducted in 2020. Danish labor market supplementing pension planning data provides information about the belonging to the hairdressing industry each year.
Results: HE’s lifelong cumulative prevalence rose from 42.3%of the baseline to 45.2%at the time of follow-up (the advantage ratio [OR] was 1.1; 95%credible interval [CI] was 1.0-1.2). The incidence of incidence fell from 42.8 cases/1,000 people (95%CI, 40.8 ~ 44.8) to 3.4 cases/1000 people (95%CI, 2.5 ~ 4.6) during the follow -up period. More than 90%of the cases developed within 8 years after the apprentice started, and 68%of cases developed during the apprenticeship period. The risk factors related to hepatic encephalopathy in the baseline are previous positive spotted stickers test (after adjustment OR [AOR], 5.3; 95%CI, 4.2-6.6), a history of special dermatitis (AOR, 3.4; 95%CI, 95%CI, 2.9-4.0) and women (AOR, 1.8; 95%CI 1.4-2.3). The most important risk factor at the time of follow -up is the previous HE (AOR, 10.1; 95%CI, 7.3 ~ 13.8) and the Patch Test positive (AOR, 4.5; 95%CI, 3.0 ~ 6.8). Among the hairdressers with HE in the basic level, 65.5%of people are relieved during the follow -up, while 34.6%of them are sustainable and usually serious HE. Baggiers with persistent HE are sub -groups that are most commonly affected by HE risk factors in the research crowd.
In this study, we tracked investigations for 35 years after graduating from hairdressers. We have observed that HE’s lifelong prevalence has risen slightly, from 42.3%of the foundation line in 2009 to 45.2%at the follow -up of 2020. The IRR of the HE of the hairdresser for the first time is 0.08, which compares the time from graduation to baseline and baseline to follow -up. This shows that the incidence of HE almost stops completely. In addition, more than 90%of the hairdressers have experienced HE’s attack in the eighth year of their occupation, of which 63.1%of the hairstyles appeared for the first time in their apprenticeship. Our data shows that the newly issued HE of the hairdresser is mainly related to the apprentice and the first few years of professional work.
The main risk factor of HE in the follow -up is the previous HE, which highlights the necessity of early first -level prevention. The overall improvement of HE is obvious, but it is worth noting that 34.6%of HE hairdressers suffer from sustainable dermatitis and are often severe dermatitis. This is equivalent to 14.2%of the research population, indicating that most graduates have been affected after many years of graduation. Performances of HE are more likely to be women. They have characteristic dermatitis (AD) medical history or positive spotting tests, highlighting the importance of these risk factors to HE. Interestingly, there is no significant difference in the number of years of working as a hairdresser in a person with a history of AD medical history and a person without AD medical history. This shows that even in individuals with normal skin barriers, excessive exposure to hairdressing stimuli and allergens quickly exceed the threshold of contact dermatitis. Although hairdressers with a history of AD medical history are more likely to develop HE and therefore require occupational guidance, the early first -level prevention seems to be equally important for apprentices, regardless of their characteristic tendency.
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HE’s first -level prevention should be concentrated on the newly graduated hairdressing apprentices and well -trained hairdressers. About one -third of the hairdressers will continue to have serious HE, emphasizing the necessity of early intervention.