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Head circumference

Occipital-frontal circumference

 

Head circumference is a measurement of a child's head around its largest area. It measures the distance from above the eyebrows and ears and around the back of the head.

Information

 

During routine checkups, the distance is measured in centimeters or inches and compared with:

  • Past measurements of a child's head circumference
  • Normal ranges for a child's sex and age (weeks, months), based on values that experts have obtained for normal growth rates of infants' and children's heads

Measurement of the head circumference is an important part of routine well-baby care. During the well-baby exam, a change from the expected normal head growth may alert the doctor of a possible problem.

For example, a head that is larger than normal or that is increasing in size faster than normal may be a sign of several problems, including water on the brain (hydrocephalus).

A very small head size (called microcephaly ) or very slow growth rate may be a sign that the brain is not developing properly.

 

 

References

Kimmel SR, Ratliff-Schaub K. Growth and development. In: Rakel RE, ed. Textbook of Family Medicine . 8th ed. Philadelphia, PA: Elsevier Saunders; 2011:chap 32.

 

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                Review Date: 2/5/2015

                Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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