This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal  disorders, Subject name: Pediatrics
[{'content': 'Which of the following is not seen in adults ? \nSelect and explain. \nA. Kawasaki disease, B. Henoch schonlein purpura, C. Susac syndrome, D. Takayasu aeritis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Kawasaki is an acute febrile mucocutaneous lymph node syndrome mainly affecting infants and young children. It is a common vasculitic disorder of childhood and has replaced acute rheumatic fever as leading cause of acquired hea disease in children in many countries', 'role': 'assistant'}]