Eczema is generally caused by skin allergies, hand eczema may be caused by hand contact with easily allergic substances, the main causes are the following: 1, hand eczema may be caused by skin allergies, contact with certain substances such as often touch detergents, laundry detergent, detergent, soap and other chemical substances. 2, hand eczema can also be caused by dietary allergies, it is best to eat less seafood, spicy, stimulating food. The company’s main goal is to provide a comprehensive range of products and services to the public. cold, etc. lead to hand eczema.