Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Macrocephaly
Medically reviewed by Min Clinic Staff | Updated: January 2026
Macrocephaly: An abnormally large head. The opposite of macrocephaly is microcephaly. Macrocephaly can be a normal variant or be a sign of pressure within the growing head during childhood, such as from hydrocephalus.