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Increased head circumference is when the measured distance around the widest part of the skull is larger than expected for the child's age and background.
A newborn's head is usually about 2 centimeters larger than the chest size. Between 6 months and 2 years, both measurements are about equal. After 2 years, the chest size becomes larger than the head.
A series of measurements over time that show an increased rate of head growth often can provide more valuable information than a single measurement that is larger than expected.
Increased pressure in the head (increased intracranial pressure) often occurs with increased head circumference. Symptoms of this condition include:
See also: Bulging fontanelles
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