Paediatricsmiddle twist
A 9-month-old boy is brought by his mother, who has been told at day care that his head looks big and who asks whether he needs a scan. His head circumference has been plotted at every visit and has followed the 98th percentile since birth; his length and weight are both on the 50th percentile. He sits without support, crawls, pulls to stand and babbles. His anterior fontanelle is soft and flat, the sutures are not separated, his eye movements are full and his tone is normal. He is feeding well and not vomiting. Which one of the following should be done next?