Children often show symptoms of rheumatic fever, which commonly leads to myocarditis, arrhythmias, palpitations, and asthma. Additionally, there can be changes in the skin, such as subcutaneous erythema nodosum, as well as joint swelling and pain. There are also general symptoms like fever, fatigue, cough, nosebleeds, abdominal pain, nausea, and vomiting, along with swelling of the lymph nodes throughout the body. During examinations, there is often a significant increase in C-reactive protein and elevated levels of anti-streptococcal antibodies and anti-O. Abnormalities can also be seen on the electrocardiogram. Once symptoms of pediatric rheumatic fever appear, it is crucial to promptly visit a hospital for diagnosis and timely treatment.