What is the normal head circumference of a 4-year-old child?

Patient's question:

Age
Detailed medical condition and consultation purpose: Doctor: Hello!
　My child is 4 years old, and his head circumference is 50CM (15). Is this normal? What is the normal head circumference for a 4-year-old child?

Doctor's answer:

1. Male child, 4 years old: Average weight is 16.70 kilograms, average height is 102.9 centimeters, average head circumference is 49.8 centimeters, average chest circumference is 52.3 centimeters. The occurrence of pediatric orthopedic diseases severely affects the patient's work. In addition to timely treatment, patients need to pay more attention to daily care. It is recommended to eat more vegetables and fruits, consume more calcium-rich foods, and avoid or reduce the chance of occurrence.