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: Medicine
Hair on end appearance is seen in X-ray skull in 
Select and explain. 
A. Thalassemia, B. Hydrocephalus, C. Chronic malaria, D. Sickle cell analuria
A: Thalassemia
Answer: A: Thalassemia 
Explanation: None