Eczema, facial erythema, and seborrheic dermatitis symptoms among young adults in China in relation to ambient air pollution, climate, and home environment

Abstract

A questionnaire survey on dermal symptoms and home environment was performed in eight Chinese cities (40 279 participants). Data on city level temperature, precipitation, PM 10 , NO 2, and gross domestic product (GDP) per capita were collected. In total, 2.2% had eczema, 2.4% facial erythema (FE) and 2.6% seborrheic dermatitis symptoms (SD). Higher temperature was associated with eczema (OR = 1.09). Higher GDP per capita was related to less SD. Higher PM 10 was related to SD. Suburban living was protective for eczema (OR = 0.77) (vs. urban). Living in old buildings (built before 1991) was related to eczema (OR = 1.42). Living near heavily trafficked roads was related to FE (OR = 1.33) and SD (OR = 1.35). Having new furniture was related to all symptoms (OR = 1.26-1.47). Burning mosquito coils (OR = 1.37-1.57) and incense (OR = 1.33-1.37) were associated with eczema, FE, or SD. Presence of cockroaches and rats/mice was associated with FE or SD (OR = 1.31-1.40). Using air conditioner, daily cleaning and frequently exposing bedding to sunshine were protective (OR = 0.60-0.83). In conclusion, higher temperature, higher PM 10 , urban living, living near heavily trafficked roads, old buildings, new furniture, burning mosquito

Heat and outpatient visits of skin diseases – A multisite analysis in China, 2014–2018

“…Moreover, our results also showed that children aged 0–6 years were at greater risk. These results were agreed by several other studies [ 11 , 21 ]. It is probably because children’s immune system is yet immature and their skin are tender to any ambient hazards, therefore they are susceptible to high temperature.…”

“…For disease types, high temperature has been found to increase the risk of skin immune diseases, especially atopic dermatitis and eczema, our finding was in line with some precious researches [ 9 , 11 , 21 ]. A time-series study in Lanzhou indicated that both extreme high temperature and moderate high temperature would increase the prevalence of atopic dermatitis, with RR of 1.85% (95%CI: 1.61%, 2.11%) and 1.45 (95%CI: 1.30%, 1.61%), respectively [ 11 ].…”

“…A time-series study in Lanzhou indicated that both extreme high temperature and moderate high temperature would increase the prevalence of atopic dermatitis, with RR of 1.85% (95%CI: 1.61%, 2.11%) and 1.45 (95%CI: 1.30%, 1.61%), respectively [ 11 ]. A questionnaire survey in China showed that high temperature was related with eczema with odds ratio of 1.09 [ 21 ]. Firstly, one reason may be that in high temperature atmosphere, too much sweat collects on the surface of skin would cause itching, producing irritation to the skin.…”

Air Pollution and Atopic Dermatitis, from Molecular Mechanisms to Population-Level Evidence: A Review

“…Many epidemiologic studies have examined exposure to air pollutants and the development or exacerbation of AD. While the majority of studies have found a positive relationship (Table 1) , some have reported null or inconclusive findings (Table 2) [81][82][83][84][85][86][87][88][89][90]. The variance of the results across studies may be attributable to varying criteria for the severity and diagnosis of AD in different countries, age of the participants, and the approach to outcome assessment.…”

Effects of climate and environment on migratory old people with allergic diseases in China: Protocol for a Sanya cohort study

“…Additionally, the tropical and humid environments, indoor dust mites facilitate to breed, and dust mites, which are often the trigger of allergic diseases such as allergic rhinitis and asthma [ 10 , 11 ]. Many studies have confirmed that exposure to PM 10 , PM 2.5 , NO 2 , CO, and O 3 , can deteriorate respiratory diseases [ 12 , 13 ]. Sanya, a famous tourist destination in China, boasts extensive forest coverage, a favorable climate, and excellent air quality, all of which can contribute to the recovery of allergic disorders such as asthma, among the elderly people.…”