This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics And Genetic Disorders, Subject name: Pediatrics
This boy presented with noisy breathing, stiff immobile joints & mental retardation. What can be the probable cause? 
Select and explain. 
A. Down syndrome, B. Hurler syndrome, C. Neurofibromatosis, D. Sturge weber syndrome
B: Hurler syndrome
Answer: B: Hurler syndrome 
Explanation: Ans. B. Hurler syndromeThe image above shows features of Gargoylism having coarse facial features. Children suffering from this have mental retardation and joint stiffness. These features are characteristics of Hurler syndrome.