Rheumatism in children is not a single disease, but encompasses a wide range of conditions such as systemic lupus erythematosus (SLE), juvenile rheumatoid arthritis (JRA), and Kawasaki fever (Kawasaki fever), and the symptoms can be different. 1. Systemic lupus erythematosus in children: Systemic lupus erythematosus presents with skin and blood involvement. In the early stage, there may be irregular fever, loss of appetite, loss of energy, generalized fatigue and weakness, symmetrical butterfly-shaped erythema on the skin, and some patients may have ulcers on the oral mucosa. 2. Juvenile rheumatoid arthritis: young people may have fever-like symptoms at the beginning, and there will be persistent high fever and other systemic symptoms. 3. Kawasaki disease: patients may have persistent high fever and bilateral conjunctival congestion, as well as enlarged lymph nodes in the neck and hard swelling of the hands and feet at an early stage. Children’s rheumatism belongs to a large category of diseases, each different disease symptoms will be different, but also includes cutaneous mucosal lymph node syndrome, found in time to the hospital is recommended to receive treatment.