From: Time-trends for eczema prevalences among children and adults from 1985 to 2015 in China: a systematic review
Year
Age (year-old)
Type of dermatitis
Prevalence (%)
Population (million)
Reference
2010
15-86
Contact dermatitis
3.5
39.4
[74]
Seborrheic dermatitis
1.8
20.0
Atopic dermatitis
1.0
11.6