Level 1: What is infant thrush? Oral thrush is a common oral disease in infants and young children, also called hand, foot and mouth disease. It is an infectious disease caused by enteroviruses and mainly presents with symptoms such as blisters, erythema and ulcers in the mouth, hands and feet. Infants and young children are more susceptible to oral thrush because their immunity is not fully developed. Level 2: What are the treatments for oral thrush? (1) Keep the oral cavity clean: When a baby suffers from oral thrush, parents need to clean the baby\’s oral cavity in time. You can gargle with physiological saline or light salt water. (2) Medication treatment: The doctor will give you medication based on the baby’s age and physical condition.