Associated Conditions & Findings
Macrocephaly
Macrocephaly is a larger-than-expected head size, which in some cases reflects hydrocephalus.
In short: Macrocephaly
- Rapid head growth can signal hydrocephalus.
- It is measured by head circumference.
- It is monitored in children with encephalocele.
- Not all large head sizes indicate a problem.
What it is
It is a head circumference that is larger than expected for a child's age and sex. It is identified by measuring head size, and rapid increases are particularly watched.
Understanding Macrocephaly
In children with encephalocele, increasing head size may signal hydrocephalus, so head circumference is monitored to catch fluid buildup early. Not every large head size indicates a problem — some reflect family traits — which is why the team looks at the trend over time and combines it with other signs and imaging.
Why it matters
Understanding macrocephaly helps families see why a rapidly growing head size is a signal to report, since it can indicate hydrocephalus that may need treatment.
Common questions
What is macrocephaly?
A larger-than-expected head size.
Can it signal hydrocephalus?
Rapid head growth can.
Is a large head always a problem?
No — the trend over time matters, and some reflect family traits.
Bottom line
Macrocephaly is a larger-than-expected head size that can signal hydrocephalus and is monitored over time.
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