Eczema, facial erythema, and seborrheic dermatitis symptoms among young adults in China in relation to ambient air pollution, climate, and home environment.
A questionnaire survey on dermal symptoms and home environment was performed in eight Chinese cities (40 279 participants). Data on city level temperature, precipitation, PM10 , NO2, 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 PM10 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 PM10 , urban living, living near heavily trafficked roads, old buildings, new furniture, burning mosquito coils and incense, and presence of cockroaches/rats/mice increased the risk of eczema, FE, or SD. Higher GDP, air conditioner, daily cleaning, and exposing bedding to sunshine were protective.
['Wang|Juan|J|https://orcid.org/0000-0003-4435-097X', 'Zhang|Yinping|Y|', 'Li|Baizhan|B|', 'Zhao|Zhuohui|Z|', 'Huang|Chen|C|', 'Zhang|Xin|X|', 'Deng|Qihong|Q|https://orcid.org/0000-0001-9824-3534', 'Lu|Chan|C|https://orcid.org/0000-0002-0110-9492', 'Qian|Hua|H|', 'Yang|Xu|X|', 'Sun|Yuexia|Y|', 'Sundell|Jan|J|https://orcid.org/0000-0003-2012-0811', 'Norbäck|Dan|D|https://orcid.org/0000-0002-5174-6668']
eczema climate home environment urbanization new furniture redecoration