This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous System, Subject name: Pediatrics
What is the underlying abnormality in this child with seizures? 
Select and explain. 
A. Tuberous sclerosis, B. Sturge-Weber syndrome, C. McCune Albright syndrome, D. Neurofibromatosis
B: Sturge-Weber syndrome
Answer: B: Sturge-Weber syndrome 
Explanation: b. Sturge-Weber syndromePort wine stain of half of the face involving ophthalmic & maxillary divisions of trigeminal nerve suggest Sturge-Weber syndrome