Hi, my 10 months old girl kid has 42 cm as head circumference which is 7 percentile in who chart. She is very active, crawling, babblings, clapping, saying bye. Is head circumference related to brain growth? btw, my mom and mom in law has 51cm. Me and husband is 57cm? should I need to be worried?

Suggestions offered by doctors on Lybrate are of advisory nature i.e., for educational and informational purposes only. Content posted on, created for, or compiled by Lybrate is not intended or designed to replace your doctor's independent judgment about any symptom, condition, or the appropriateness or risks of a procedure or treatment for a given person.