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Children's Health

Head Circumference



One of my twin granddaughters had her 12-month check-up today. She was born 6 weeks premature so I am using the adjusted growth chart for 11 months and comparing it to her 9-month check-up at 8 months. At 8 months adjusted HC was 17 inches in the 33rd percentile (weight 17.125 height 27 in) At 11 months adjusted HC was 18.25 inches in the 87th percentile (weight 19.4375 height 29 in)

Is there reason to be concerned on the HC growth? They didn`t seem to be concerned at the doctor`s office even though I did think that the growth increased so rapidly...and she is fairly irritable this last week, even though that could just be the 12-month clingy phase.

Thanks for any help you could give me...I really don`t want to worry my daughter unnecessarily.


Thanks for your question. Unfortunately, I cannot figure out the ages you give for head circumference to make a judgement in this situation. Ultimately, I would defer to the pediatric health care provider who is working with your granddaughter.

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Response by:

Sarah Sauntry, RN, MS, CPNP-PC
Assistant Professor of Clinical Nursing
College of Nursing
University of Cincinnati