The recurrence of eczema in babies may be due to atopic dermatitis or repeated exposure to allergens. 1. Atopic dermatitis: the baby’s atopic constitution is related to genetic factors, immune factors and abnormal skin barrier function, manifesting itself in dry skin, recurrent eczema-like rashes and intense itching. 2. Repeated exposure to allergens: If you don’t find the allergens in time, such as the baby’s allergy to ultraviolet rays or to milk, eggs, fish and shrimp and other food allergies, unknowingly leading to the baby’s repeated exposure, which can lead to eczema back and forth. When the baby has eczema, you need to consult a doctor in time, follow the doctor’s instructions for treatment and appropriate skin care.