Study on relationship between chronic eczema in different body parts and patch test(Review)

The dermatitis/eczema is associated with various allergens,and it is found that the allergens vary in different parts of the common dermatitis / eczema,facial dermatitis / eczema allergens are mainly nickel sulfate,potassium dichromate,benzene,and aromatic compounds,while hand dermatitis/eczema allergens are thiomersal,aromatic compounds,potassium dichromate,p-phenylenediamine,and umbilical part dermatitis/eczema are nickel sulfate.Patch test can help to identify contact allergens of chronic eczema and dermatitis in patients and show that dermatitis and eczema in different parts of body are caused by different common allergens.