This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: DNB 2018, Subject name: Pediatrics
Most common cause of syncope in a child? 
Select and explain. 
A. Breath holding spell, B. Tantrum spell, C. Hypoglycemia, D. Neurocardiogenic
D: Neurocardiogenic
Answer: D: Neurocardiogenic 
Explanation: Syncope is sudden transient loss of consciousness with inability to maintain postural tone - Syncope is caused by a lack of adequate cerebral blood flow - Most common cause of syncope in the normal pediatric population is neurocardiogenic syncope, which is also known as vasovagal syncope.