Microcephaly

Question 1

what is it?

Answer 1

an occipital-frontal circumference < 2nd centile

Question 2

causes

Answer 2

normal variation e.g. small child with small head
familial e.g. parents with small head
congenital infection
perinatal brain injury e.g. hypoxic ischaemic encephalopathy
fetal alcohol syndrome
syndromes: Patau
craniosynostosis