What causes eczema?

The onset of eczema is the result of the interaction of many factors, and some types of eczema are closely related to heredity. First of all, some toxic and harmful substances can act on the skin, causing skin eczema. People with unbalanced immunity, such as people with low immunity, are more likely to suffer from eczema. Secondly, sun exposure, water washing, dyes in clothes, cosmetics and microorganisms in the environment can all lead to eczema.