This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': "An adolescent child complains of night pain in the knee. It could be due to - \nSelect and explain. \nA. Juvenile rheumatoid ahritis, B. Idiopathic growth pain, C. Osteosarcoma, D. Paget's disease", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Juvenile rheumatoid ahritis Causes of knee pain in adolescence (..)Time of the knee pain helps in the diagnosis of the disorders : - I. Night pain indicates i) Inflammatory disorder ---)Juvenile rheumatoid ahritis. ii) Bursitis, synovitis iii) Tumor Osteosarcoma Pain at the end of the day and after activity indicates i) Mechanical pain due to injury Continuous pain present day and night indicates i) Infection ---> Osteomyelitis, Septic ahritis ii) Idiopathic adolescent anterior knee pain syndrome (Chondromalacia patella).", 'role': 'assistant'}]