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: Pediatrics
The most common presentation of hyperparathyroidism beyond the neonatal period is – 
Select and explain. 
A. Syncope secondary to prolonged QT intervals, B. Tingling of extremities, C. Seizure, D. Bronchospasm
B: Tingling of extremities
Answer: B: Tingling of extremities 
Explanation: Musculoskeletal pain and cramps are the earliest symptoms and progress to numbness, stiffness and tingling of the hands and feet.
These are symptoms of tetany due to hypocalcemia.