Macrocephaly A congenital disorder characterized by abnormally large-sized head and brain in relation to the rest of the body. Also called macrocephalia and megalocephaly, macrocephaly is diagnosed when the circumference of the head is more than two...

(from Greek, makros: great, kephale: head) An abnormally large development of the head, and of the BRAIN. It has been associated with enlargement of the SUBARACHNOID SPACE in many cases. It is contrasted with MICROCEPHALY; MEGALENCEPHALY is a more...

Macrocephaly (from the Greek words μακρύς, meaning "long", and κεφάλη, meaning "head"), is when the head circumference is larger than average for the age and sex of the infant or...

SAN DIEGO -- There appear to be no differences in the mean head circumference between children with and without autism, results from a population-based case-control study show. The finding differs from other smaller studies that have reported increased rates of macrocephaly in...