What is microcephaly, hydrocephalus and macrocephaly?

Microcephaly. Micro = small cephaly = condition of the head. Microcephaly is a congenital condition that occurs because a child's developing brain doesn’t grow properly or has stopped growing after birth. Head size is much smaller than the normal. read more

Macrocephaly refers to an overly large head in infants. Not all cases of macrocephaly are cause for alarm. However, it is often a sign of other complications or conditions in the brain. read more

In hydrocephalus, excess CSF collects in the large sections of the brain called the ventricles. This may occur for many reasons, including Chiari malformation , abnormal cysts within the brain, and infections such as meningitis . In some cases, a child may have benign macrocephaly. read more