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A 27-year-old female asked:

My 3 month old girl has a head circumference of 38.5 cm ..at birth she measured 34cms.m worried abt her low growth ..is she ok?

3 doctor answers4 doctors weighed in
Dr. Lori Semel
Pediatrics 35 years experience
Head circ: The head circumference is still within the normal range. Different people can measure and get different numbers. What were her head circumferences at 1 and 2 months old? It is the reason we follow the measurements over time. No need for concern yet.
Dr. James Ferguson
Pediatrics 46 years experience
Within normal range: Both of these measurements are within the normal range and by themselves are not notable.Measurements of head circumference at this age is inconsistent from one observer to another. Head growth is better followed with serial measurements, done with the same technique and monitored over time. Two measurements will not establish a pattern while 3 or more likely give more information.Time will tell
Dr. William Singer
Pediatric Neurology 51 years experience
See pediatrician: Her head circumference was in the normal range at birth. Head growth is about 1 cm per month for the first 6 months, so 38.5 cm is within the normal range for age. Speak to your pediatrician who can show you the head circumference growth chart.

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Last updated Apr 3, 2015

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