Discuss the possible causes of minor blisters appearing on a child’s hand, including miliaria rubra and hand, foot, and mouth disease, and provide corresponding diagnostic and treatment suggestions.

Understand the causes and treatment methods for blisters on a 3-year-old’s hands, prevent the worsening of miliaria rubra, and maintain the baby’s skin health.

Explore the possible reasons for small blisters appearing on a child’s hands, including miliaria rubra and hand, foot, and mouth disease, and provide corresponding diagnostic and treatment suggestions.