What are the causes of eczema

　　eczema The onset of disease is caused by the interaction of multiple factors.

　　(1) Genetic factors

　　Some types of eczema are closely related to genetics.

　　(2) Environmental factors

　　Many studies have confirmed that environmental factors are one of the important reasons for the increased prevalence of eczema. The environment includes group environment and individual environment. Human group environmental pathogenic factors refer to large areas of outdoor air, water, soil, radioactive sources, large areas of allergenic pollen vegetation, large areas of airborne allergenic bacterial sources, etc. The individual microenvironment refers to the individual's living environment. Since people spend about 2/3 of their lives indoors, the individual microenvironment has a closer impact on eczema. The impact of environmental factors mainly refers to the increasing number and complexity of environmental allergens, including:

　　1. Environmental allergens in modern clothing such as artificial fabrics, artificial leather products, clothing-related printing and dyeing agents, bleaches, brighteners, anti-moth agents, anti-fungal agents, stiffening agents, etc.

　　2. Artificial food, convenience food, off-season food, chemical fertilizers, pesticides, artificial feed, feed additives used in food production, preservatives, mineral oxidants, spices, pigments, ripening agents, thickeners, etc. used in food processing, modern dietary environmental allergens.

　　3. The electromagnetic radiation produced by man-made building components, chemical coatings, plastic products, rubber products, man-made fibers, adhesives, waterproofing agents, household and office electronic equipment, room cleaners, and pesticides are environmental allergens in modern living.

　　4. Gases produced by the combustion of chemical fuels, materials for manufacturing cars, boats, and airplanes, asphalt pavement on roads, pollen from green plants beside the road, and other environmental allergens in modern transportation.

　　5. All enzyme preparations used in detergent manufacturing in detergent factories, toluene diisocyanate in plastic factories, latex in rubber factories, antibiotics and other chemical raw materials in pharmaceutical factories and other environmental allergens in modern occupations.

　　6. Certain environmental allergens related to modern lifestyles, such as the use of cosmetics, cats, parrots, etc. When the human body lives under the influence of such adverse environmental factors for a long time, it can lead to immune dysfunction, eventually causing an allergic reaction to the environment, thus causing eczema.