Eczema is a localized inflammatory skin disease, which can be classified into acute eczema, subacute eczema, and chronic eczema based on the disease course. The prevalence rate of eczema in the general population in China is approximately 3%–5%, and that in children is about 10%–20%, making it a relatively common skin disease. Due to the pruritus, erosion, exudation, ulceration, and recurrent attacks of the affected area, eczema seriously affects patients' daily lives.

The Dietary Guidelines for Adult Obesity (2024 Edition) released by the National Health Commission of the People’s Republic of China indicates that the overweight rate and obesity rate among Chinese citizens aged 18 and above reach 34.3% and 16.4%, respectively. Data from the World Obesity Atlas published by the World Obesity Federation shows that the increase rates of adult obesity and childhood obesity in China are 2.8% and 2%, respectively. Based on the current development trend, it is estimated that by 2030, the number of overweight and obese people in China will account for approximately half of the total population.

The main pathological feature of tissue fibrosis is the excessive proliferation of fibrous connective tissue in organ tissues, accompanied by a reduction in parenchymal cells, resulting in tissue lesions. If this condition progresses continuously without intervention, it can lead to structural damage and functional decline of organs, and in severe cases, even death ^[1].

Modern medicine holds that psoriasis is a chronic skin disease caused by multiple factors such as genetic and environmental factors. Similar to lupus erythematosus mentioned earlier in some aspects, it involves immune - mediated factors, which play a crucial role in the occurrence and development of psoriasis.