What causes infant eczema?

Jun 07, 2024 Source: Cainiu Health
Disease description:

My baby is just over three months old. Recently, the child developed some eczema, which seems quite severe, appearing as small red bumps. I'm not sure whether it's due to poor immunity or caused by environmental factors. I'd like to ask, what causes eczema in infants?

Doctor's answer (1)
Dr. Zhou Xiaofeng

There are many causes of infantile eczema. Genetic factors are among the most common; if parents have a history of allergies, the likelihood of their baby developing eczema increases. Immature immune system development is another key factor—infants' immune systems are not yet fully developed, making them more sensitive to external stimuli and prone to allergic reactions that can lead to eczema. Environmental factors should also not be overlooked. Seasonal changes, such as dry winter air or humid summer conditions, may trigger eczema. Allergens in the air, including pollen, dust mites, and animal dander, can also irritate an infant's skin.

Diet plays a role as well. Introducing solid foods too early, especially those that may cause food allergies—such as cow's milk, eggs, fish, and shellfish—can contribute to the development of eczema. Chemical residues from skincare products or detergents used on baby items, as well as irritating clothing materials, may also provoke skin inflammation and result in eczema. An infant’s emotional state, such as anxiety or stress, can likewise affect skin health and potentially trigger or worsen eczema symptoms.

If symptoms worsen or fail to improve over time, prompt medical attention is recommended.