1. Definition of Infant Eczema Infant eczema is a common skin disease that mostly occurs in infants and young children and manifests as skin redness, swelling, blisters, itching and other symptoms. It is caused by a variety of causes, including genetic factors, environmental factors, and immune abnormalities. 2. The influence of genetic factors on infant eczema 1. Family history: Babies with a family history are more likely to suffer from eczema. 2. Gene mutations: Certain gene mutations may lead to abnormal skin barrier function, thereby increasing the risk of eczema. 3. The impact of environmental factors on infant eczema 1. Air pollution: Pollutants in the air may irritate the skin and cause eczema.