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: Unknown
Toxic Epidermal necrolysis is also called - 
Select and explain. 
A. Sweet's syndrome, B. Lyell's syndrome, C. Hailey and Hailey's disease, D. Duhring's disease
B: Lyell's syndrome
Answer: B: Lyell's syndrome 
Explanation: Ans-B