This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hemolytic anemia, Subject name: Pediatrics
[{'content': 'Which of the following condition can result in dactylitis? \nSelect and explain. \nA. Hemophilia, B. Von Willebrand disease 1, C. Thalassemia, D. Sickle cell anemia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: - Dactylitis is often first manifestation of pain in infants & young children with sickle cell anemia - Occurs in 50% of children with sickle cell disease by their 2nd year of life - Dactylitis often manifests with symmetric or unilateral swelling of the hands and/or feet.', 'role': 'assistant'}]