Kawasaki disease, also known as mucocutaneous lymph node syndrome, has an unclear cause and is generally prevalent in infants and young children, with 80% of cases occurring in children under five years old. The mechanism of the disease is also not very clear. Its main pathological presentation is systemic vasculitis, often involving the coronary arteries. The primary clinical symptoms include high fever, which is unresponsive to antibiotic treatment, conjunctival congestion, diffuse oral congestion, strawberry tongue, indurative edema of the hands and feet, and palmoplantar erythema. Additionally, it may affect the heart, leading to conditions such as pericarditis, myocarditis, endocarditis, and arrhythmias. During the acute phase of Kawasaki disease, the high fever and diffuse oral mucosal congestion can affect the child's mental state. If the heart is involved, there may be abnormalities in heart rate and heart function, which can also lead to a poor mental state. Therefore, if Kawasaki disease is confirmed, it definitely requires active treatment.